逆天通用水印支持Winform，WPF，Web，WP，Win10。支持位置选择（9个位置==》[X]）

    /// <summary>    /// 水印类（重要参数：原图类型，水印类型，水印位置，图片水印路径，文字水印内容）    /// </summary>    public class WaterMark    {        #region 基础属性设置        PRivate string _photoType;        /// <summary>        /// 原图类型        /// </summary>        public string PhotoType        {            get { return _photoType; }            set { _photoType = value; }        }        private WaterMarkTypeEnum _waterMarkType = WaterMarkTypeEnum.NoneMark;        /// <summary>        /// 水印类型        /// </summary>        public WaterMarkTypeEnum WaterMarkType        {            get { return _waterMarkType; }            set { _waterMarkType = value; }        }         #endregion        #region 水印效果设置        private WaterMarkLocationEnum _waterMarkLocation = WaterMarkLocationEnum.BottomRight;        /// <summary>        /// 水印位置        /// </summary>        public WaterMarkLocationEnum WaterMarkLocation        {            get { return _waterMarkLocation; }            set { _waterMarkLocation = value; }        }        private float _transparency = 0.7f;        /// <summary>        /// 水印透明度        /// </summary>        public float Transparency        {            get { return _transparency; }            set { _transparency = value; }        }         #endregion        #region 图片水印设置        private string _imgPath;        /// <summary>        /// 图片水印路径        /// </summary>        public string ImgPath        {            get { return _imgPath; }            set { _imgPath = value; }        }         #endregion        #region 文字水印设置        private string _text = "dunitian";        /// <summary>        /// 文字水印内容        /// </summary>        public string Text        {            get { return _text; }            set { _text = value; }        }        private string _fontFamily = "微软雅黑";        /// <summary>        /// 文字字体        /// </summary>        public string FontFamily        {            get { return _fontFamily; }            set { _fontFamily = value; }        }        private Brush _brushesColor = Brushes.Black;        /// <summary>        /// 文字颜色        /// </summary>        public Brush BrushesColor        {            get { return _brushesColor; }            set { _brushesColor = value; }        }        private  FontStyle _fontStyle = FontStyle.Regular;        /// <summary>        /// 字体样式        /// </summary>        public FontStyle FontStyle        {            get { return _fontStyle; }            set { _fontStyle = value; }        }        private float _fontSize = 14f;        /// <summary>        /// 字体大小        /// </summary>        public float FontSize        {            get { return _fontSize; }            set { _fontSize = value; }        }         #endregion    }

    /// <summary>    /// 水印位子    /// </summary>    public enum WaterMarkLocationEnum    {        /// <summary>        /// 顶部居左        /// </summary>        TopLeft = 1,        /// <summary>        /// 顶部居中        /// </summary>        TopCenter = 2,        /// <summary>        /// 顶部居右        /// </summary>        TopRight = 3,        /// <summary>        /// 中部居左        /// </summary>        CenterLeft = 4,        /// <summary>        /// 中部居中        /// </summary>        CenterCenter = 5,        /// <summary>        /// 中部居右        /// </summary>        CenterRight = 6,        /// <summary>        /// 底部居左        /// </summary>        BottomLeft = 7,        /// <summary>        /// 底部居左        /// </summary>        BottomCenter = 8,        /// <summary>        /// 底部居左        /// </summary>        BottomRight = 9,    }

/// <summary>    /// 水印类型    /// </summary>    public enum WaterMarkTypeEnum    {        /// <summary>        /// 文字        /// </summary>        Text = 1,        /// <summary>        /// 图片        /// </summary>        Image = 2,        /// <summary>        /// 无水印        /// </summary>        NoneMark = 3    }

    /// <summary>    /// 水印帮助类    /// </summary>    public class WaterMarkHelper    {        #region 设置水印        /// <summary>        /// 设置水印        /// </summary>        /// <param name="imgPath"></param>        /// <param name="model"></param>        /// <returns></returns>        public static Image SetWaterMark(string imgPath, WaterMark model)        {            //获取背景图            Image imgSource = Image.FromFile(imgPath);            //获取水印图片            Image markImg = null;            //水印检验（文字，图片[路径下是否存在图片]）            #region 水印校验+水印处理            if (model == null)            {                return null;            }            //看看原图是否存在            if (!System.IO.File.Exists(imgPath))            {                return null;            }            //根据水印类型校验+水印处理            switch (model.WaterMarkType)            {                case WaterMarkAPP.Enums.WaterMarkTypeEnum.Text:                    if (string.IsNullOrEmpty(model.Text))                    {                        return null;                    }                    else                    {                        markImg = TextToImager(model);//水印处理-如果是文字就转换成图片                    }                    break;                case WaterMarkAPP.Enums.WaterMarkTypeEnum.Image:                    if (!System.IO.File.Exists(model.ImgPath))                    {                        return null;                    }                    else                    {                        //获得水印图像                                   markImg = Image.FromFile(model.ImgPath);                    }                    break;                case WaterMarkAPP.Enums.WaterMarkTypeEnum.NoneMark:                    return imgSource;            }            #endregion            #region 创建颜色矩阵            //创建颜色矩阵            float[][] ptsArray ={                                  new float[] {1, 0, 0, 0, 0},                                 new float[] {0, 1, 0, 0, 0},                                 new float[] {0, 0, 1, 0, 0},                                 new float[] {0, 0, 0, model.Transparency, 0}, //注意：0.0f为完全透明，1.0f为完全不透明                                 new float[] {0, 0, 0, 0, 1}};            ColorMatrix colorMatrix = new ColorMatrix(ptsArray);            //新建一个Image属性            ImageAttributes imageAttributes = new ImageAttributes();            //将颜色矩阵添加到属性            imageAttributes.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Default);            #endregion            //原图格式检验+水印            #region 原图格式检验+水印            //判断是否是索引图像格式            if (imgSource.PixelFormat == PixelFormat.Format1bppIndexed || imgSource.PixelFormat == PixelFormat.Format4bppIndexed || imgSource.PixelFormat == PixelFormat.Format8bppIndexed)            {                #region 索引图片,转成位图再加图片                //转成位图,这步很重要                 Bitmap bitmap = new Bitmap(imgSource.Width, imgSource.Height);                Graphics graphic = Graphics.FromImage(bitmap);                #region 缩放处理                //如果原图小于水印图片 等比缩放水印图                if (markImg.Width >= imgSource.Width || markImg.Height >= imgSource.Height)                {                    markImg = ImageShrink(imgSource, markImg);                }                #endregion                #region 水印位置                //水印位置                int x;                int y;                WaterMarkLocations(model, imgSource, markImg, out x, out y);                #endregion                //将原图画在位图上                graphic.DrawImage(imgSource, new Point(0, 0));                //将水印加在位图上                graphic.DrawImage(markImg, new Rectangle(x, y, markImg.Width, markImg.Height), 0, 0, markImg.Width, markImg.Height, GraphicsUnit.Pixel, imageAttributes);                graphic.Dispose();                return bitmap;                #endregion            }            else            {                #region 非索引图片,直接在上面加上水印                Graphics graphic = Graphics.FromImage(imgSource);                #region 缩放处理                //如果原图小于水印图片 等比缩放水印图                if (markImg.Width >= imgSource.Width || markImg.Height >= imgSource.Height)                {                    markImg = ImageShrink(imgSource, markImg);                }                #endregion                #region 水印位置                //水印位置                int x;                int y;                WaterMarkLocations(model, imgSource, markImg, out x, out y);                #endregion                //将水印加在原图上                graphic.DrawImage(markImg, new Rectangle(x, y, markImg.Width, markImg.Height), 0, 0, markImg.Width, markImg.Height, GraphicsUnit.Pixel, imageAttributes);                graphic.Dispose();                return imgSource;                #endregion            }            #endregion        }         #endregion        #region 水印处理-文字转图片        /// <summary>        /// 水印处理-文字转图片        /// </summary>        /// <param name="model"></param>        /// <returns></returns>        private static Image TextToImager(WaterMark model)        {            Font f = new Font(model.FontFamily, model.FontSize, model.FontStyle);            Bitmap fbitmap = new Bitmap(Encoding.GetEncoding("GBK").GetByteCount(model.Text) / 2 * f.Height, f.Height);            Graphics gh = Graphics.FromImage(fbitmap);//创建一个画板;            gh.SmoothingMode = SmoothingMode.AntiAlias;            gh.DrawString(model.Text, f, model.BrushesColor, 0, 0);//画字符串            return fbitmap as Image;        }        #endregion        #region 水印位置        /// <summary>        /// 水印位置        /// </summary>        /// <param name="model"></param>        /// <param name="imgSource"></param>        /// <param name="markImg"></param>        /// <param name="x"></param>        /// <param name="y"></param>        private static void WaterMarkLocations(WaterMark model, Image imgSource, Image markImg, out int x, out int y)        {            x = 0;            y = 0;            switch (model.WaterMarkLocation)            {                case WaterMarkLocationEnum.TopLeft:                    x = 0;                    y = 0;                    break;                case WaterMarkLocationEnum.TopCenter:                    x = imgSource.Width / 2 - markImg.Width / 2;                    y = 0;                    break;                case WaterMarkLocationEnum.TopRight:                    x = imgSource.Width - markImg.Width;                    y = 0;                    break;                case WaterMarkLocationEnum.CenterLeft:                    x = 0;                    y = imgSource.Height / 2 - markImg.Height / 2;                    break;                case WaterMarkLocationEnum.CenterCenter:                    x = imgSource.Width / 2 - markImg.Width / 2;                    y = imgSource.Height / 2 - markImg.Height / 2;                    break;                case WaterMarkLocationEnum.CenterRight:                    x = imgSource.Width - markImg.Width;                    y = imgSource.Height / 2 - markImg.Height / 2;                    break;                case WaterMarkLocationEnum.BottomLeft:                    x = 0;                    y = imgSource.Height - markImg.Height;                    break;                case WaterMarkLocationEnum.BottomCenter:                    x = imgSource.Width / 2 - markImg.Width / 2;                    y = imgSource.Height - markImg.Height;                    break;                case WaterMarkLocationEnum.BottomRight:                    x = imgSource.Width - markImg.Width;                    y = imgSource.Height - markImg.Height;                    break;            }        }        #endregion        #region 缩放水印        /// <summary>        /// 等比缩放水印图（缩小到原图的1/3）        /// </summary>        /// <param name="imgSource"></param>        /// <param name="successImage"></param>        /// <returns></returns>        private static Image ImageShrink(Image imgSource, Image markImg)        {            int w = 0;            int h = 0;            Image.GetThumbnailImageAbort callb = null;            //对水印图片生成缩略图,缩小到原图的1/3(以短的一边为准)                                 if (imgSource.Width < imgSource.Height)            {                w = imgSource.Width / 3;                h = markImg.Height * w / markImg.Width;            }            else            {                h = imgSource.Height / 3;                w = markImg.Width * h / markImg.Height;            }            markImg = markImg.GetThumbnailImage(w, h, callb, new System.IntPtr());            return markImg;        }        #endregion    }

        /// <summary>        /// 文字水印调用        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void Button_Click(object sender, RoutedEventArgs e)        {            //给水印对象赋对应的值            WaterMark waterMark = new WaterMark();            waterMark.WaterMarkType = Enums.WaterMarkTypeEnum.Text;            waterMark.Transparency = 0.7f;            waterMark.Text = "dunitian.VEVb.com";            waterMark.FontStyle = System.Drawing.FontStyle.Bold;            waterMark.FontFamily = "Consolas";            waterMark.FontSize = 20f;            waterMark.BrushesColor = System.Drawing.Brushes.YellowGreen;            waterMark.WaterMarkLocation = Enums.WaterMarkLocationEnum.CenterCenter;            //调用            Image successImage = WaterMarkHelper.SetWaterMark("text.png", waterMark);            //保存            successImage.Save("text1.png", System.Drawing.Imaging.ImageFormat.Png);            MessageBox.Show("请查看软件根目录", "成功");        }

/// <summary>        /// 图片水印调用        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void Button_Click_1(object sender, RoutedEventArgs e)        {            //给水印对象赋对应的值            WaterMark waterMark = new WaterMark();            waterMark.WaterMarkType = Enums.WaterMarkTypeEnum.Image;            waterMark.ImgPath = "水印.png";            waterMark.WaterMarkLocation = Enums.WaterMarkLocationEnum.CenterCenter;            waterMark.Transparency = 0.7f;            //调用            Image successImage = WaterMarkHelper.SetWaterMark("text.png", waterMark);            //保存            successImage.Save("text2.png", System.Drawing.Imaging.ImageFormat.Png);            MessageBox.Show("请查看软件根目录","成功");        }

namespace WaterMarkAPP{    /// <summary>    /// MainWindow.xaml 的交互逻辑    /// </summary>    public partial class MainWindow : Window    {        public MainWindow()        {            InitializeComponent();        }        #region 按钮事件        /// <summary>        /// 单文水印        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void BtnFont_Click(object sender, RoutedEventArgs e)        {            WaterMark waterMark = WaterMarkFont();            DIVWaterMark(waterMark);        }        /// <summary>        /// 批文水印        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void BtnFonts_Click(object sender, RoutedEventArgs e)        {            WaterMark waterMark = WaterMarkFont();            DIVWaterMarks(waterMark);        }        /// <summary>        /// 单图水印        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void BtnImage_Click(object sender, RoutedEventArgs e)        {            WaterMark waterMark = WaterMarkImage();            DIVWaterMark(waterMark);        }        /// <summary>        /// 批图水印        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void BtnImages_Click(object sender, RoutedEventArgs e)        {            WaterMark waterMark = WaterMarkImage();            DIVWaterMarks(waterMark);        }         #endregion        #region 关闭程序        /// <summary>        /// 关闭程序        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void Button_Click(object sender, RoutedEventArgs e)        {            Environment.Exit(0);        }        #endregion        #region 窗体拖动        /// <summary>        /// 窗体拖动        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void DragWindow(object sender, MouseButtonEventArgs e)        {            if (e.LeftButton == MouseButtonState.Pressed)            {                DragMove();            }        }        #endregion        #region 版权系列        private void TextBlock_MouseLeave(object sender, MouseEventArgs e)        {            Process.Start("http://dunitian.VEVb.com/");        }        private void TextBlock_MouseLeave_1(object sender, MouseEventArgs e)        {            Process.Start("http://tieba.baidu.com/f?kw=毒逆天");        }        private void TextBlock_MouseLeave_2(object sender, MouseEventArgs e)        {            Process.Start("http://1054186320.qzone.qq.com/");        }        #endregion        #region 软件代码（水印核心代码请看Helper类,最简洁的调用请看APIDemo文件夹里面的内容）        #region 水印预设        /// <summary>        /// 水印文字预设        /// </summary>        /// <returns></returns>        private static WaterMark WaterMarkFont()        {            WaterMark waterMark = new WaterMark();            waterMark.WaterMarkType = Enums.WaterMarkTypeEnum.Text;            waterMark.Transparency = 0.7f;            waterMark.Text = "dunitian.VEVb.com";            waterMark.FontStyle = System.Drawing.FontStyle.Bold;            waterMark.FontFamily = "Consolas";            waterMark.FontSize = 20f;            waterMark.BrushesColor = System.Drawing.Brushes.YellowGreen;            waterMark.WaterMarkLocation = Enums.WaterMarkLocationEnum.CenterCenter;            return waterMark;        }        /// <summary>        /// 图片水印预设        /// </summary>        /// <returns></returns>        private static WaterMark WaterMarkImage()        {            WaterMark waterMark = new WaterMark();            waterMark.WaterMarkType = Enums.WaterMarkTypeEnum.Image;            waterMark.ImgPath = "水印.png";            waterMark.WaterMarkLocation = Enums.WaterMarkLocationEnum.BottomRight;            waterMark.Transparency = 0.7f;            return waterMark;        }        #endregion        #region 水印操作        /// <summary>        /// 单个水印操作        /// </summary>        /// <param name="waterMark"></param>        private static void DIVWaterMark(WaterMark waterMark)        {            #region 必须参数获取            OpenFileDialog dialog = new OpenFileDialog            {                Filter = "png(*.png)|*.png|jpg(*.jpg)|*.jpg|bmp(*.bmp)|*.bmp|gif(*.gif)|*.gif|jpeg(*.jpeg)|*.jpeg",                Title = "打开一张图片"            };            if (dialog.ShowDialog() != true)            {                return;            }            //图片路径            string filePath = dialog.FileName;            //文件名            string fileName = System.IO.Path.GetFileNameWithoutExtension(filePath);            //图片所处目录            string dirPath = System.IO.Path.GetDirectoryName(filePath);            //存放目录            string savePath = dirPath + "//DNTWaterMark";            //是否存在，不存在就创建            if (!Directory.Exists(savePath))            {                Directory.CreateDirectory(savePath);            }            #endregion            #region 水印操作            Image successImage = WaterMarkHelper.SetWaterMark(filePath, waterMark);            if (successImage != null)            {                //保存图片（不管打不打开都保存）                successImage.Save(savePath + "//" + fileName + ".png", System.Drawing.Imaging.ImageFormat.Png);                //是否打开目录                MessageBoxResult result = MessageBox.Show("水印成功！是否打开目录？", "逆天友情提醒", MessageBoxButton.YesNo);                if (result == MessageBoxResult.Yes)                {                    System.Diagnostics.Process.Start("explorer.exe ", savePath);//打开保存后的路径                }            }            else            {                MessageBox.Show("水印失败！请检查原图和水印图！", "逆天友情提醒");            }            #endregion        }        /// <summary>        /// 批量水印操作        /// </summary>        /// <param name="waterMark"></param>        private void DIVWaterMarks(WaterMark waterMark)        {            System.Windows.Forms.FolderBrowserDialog dialog = new System.Windows.Forms.FolderBrowserDialog            {                Description = "选择你要批量水印的图片目录"            };            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)            {                string[] files = Directory.GetFiles(dialog.SelectedPath);                if (files.Length <= 0)                {                    return;                }                #region 存储专用                //图片所处目录                string dirPath = System.IO.Path.GetDirectoryName(files[0]);                //存放目录                string savePath = dirPath + "//DNTWaterMark";                //是否存在，不存在就创建                if (!Directory.Exists(savePath))                {                    Directory.CreateDirectory(savePath);                }                #endregion                int num = 0;//计数用                foreach (string filePath in files)                {                    //文件名                    string fileName = System.IO.Path.GetFileNameWithoutExtension(filePath);                    Image successImage = WaterMarkHelper.SetWaterMark(filePath, waterMark);                    if (successImage != null)                    {                        //保存图片                        successImage.Save(savePath + "//" + fileName + ".png", System.Drawing.Imaging.ImageFormat.Png);                        num++;                    }                }                //是否打开目录                MessageBoxResult result = MessageBox.Show("逆天友情提醒：已转换 " + num + " 张图片~是否打开目录？", "转换状态", MessageBoxButton.YesNo);                if (result == MessageBoxResult.Yes)                {                    System.Diagnostics.Process.Start("explorer.exe ", savePath);//打开保存后的路径                }            }        }        #endregion        #endregion    }}

<Window x:Class="WaterMarkAPP.MainWindow"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        Title="水印工具" Height="545" Width="298" Background="Transparent" AllowsTransparency="True"         WindowStyle="None" WindowStartupLocation="CenterScreen" MouseLeftButtonDown="DragWindow" Icon="1.ico">    <!--快乐玩耍：DIV一个手机-->    <!--手机整体-->    <Border BorderBrush="Green"             Background="Black"            BorderThickness="4"            CornerRadius="10,10,10,10">        <Grid>            <!--主屏幕-->            <Border BorderBrush="Gray"                 BorderThickness="2"                Margin="10,50,10,40">                <Grid Background="#FF151515">                    <Grid.RowDefinitions>                        <RowDefinition></RowDefinition>                        <RowDefinition></RowDefinition>                        <RowDefinition></RowDefinition>                        <RowDefinition></RowDefinition>                        <RowDefinition></RowDefinition>                        <RowDefinition></RowDefinition>                        <RowDefinition></RowDefinition>                    </Grid.RowDefinitions>                    <TextBlock FontFamily="微软雅黑">对不起，系统已挂请联系逆天重装Win10！</TextBlock>                    <Button Grid.Row="1" Opacity="0.6"  HorizontalAlignment="Center" VerticalAlignment="Center" Height="50" Width="100" Click="BtnFont_Click">单文水印</Button>                    <Button Grid.Row="2" Opacity="0.6"  HorizontalAlignment="Center" VerticalAlignment="Center" Height="50" Width="100" Click="BtnImage_Click">单图水印</Button>                    <Button Grid.Row="3" Opacity="0.6"  HorizontalAlignment="Center" VerticalAlignment="Center" Height="50" Width="100" Click="BtnFonts_Click">批文水印</Button>                    <Button Grid.Row="4" Opacity="0.6"  HorizontalAlignment="Center" VerticalAlignment="Center" Height="50" Width="100" Click="BtnImages_Click">批图水印</Button>                    <Button Grid.Row="5" Opacity="0.6"  HorizontalAlignment="Center" VerticalAlignment="Center" Height="50" Width="100" Click="Button_Click">关闭程序</Button>                </Grid>            </Border>            <!--底部-->            <Border BorderBrush="Black"                 BorderThickness="2"                CornerRadius="0,0,10,10"                VerticalAlignment="Bottom"                Height="40">                <!--底部按键-->                <Grid>                    <TextBlock Text="毒" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="80,0,0,0" Width="20" Foreground="Gray" MouseLeave="TextBlock_MouseLeave" />                    <TextBlock Text="逆" HorizontalAlignment="Center" VerticalAlignment="Center" Width="20" Foreground="Gray"  MouseLeave="TextBlock_MouseLeave_1"/>                    <TextBlock Text="天" HorizontalAlignment="Right" VerticalAlignment="Center" Margin="0,0,80,0" Width="20" Foreground="Gray"  MouseLeave="TextBlock_MouseLeave_2"/>                </Grid>            </Border>        </Grid>    </Border></Window>