C#中数据的传递以及ToolStripProgressBar

public partial class Form1 : Form {   public Form1()  {   InitializeComponent();   toolStripProgressBar_save.Minimum = 0;   toolStripProgressBar_save.Maximum = 100;   toolStripProgressBar_save.Step = 5;  }  #region 不涉及数据传输  private void button_10_Click(object sender, EventArgs e)  {   //清空进度表   toolStripProgressBar_save.Value = 0;   if(toolStripProgressBar_save.Value<10)   {    for (int i=0;i<2;i++)    {     toolStripProgressBar_save.PerformStep();     toolStripLabel_save.Text = toolStripProgressBar_save.Value.ToString() + "%";    }   }  }  private void button_30_Click(object sender, EventArgs e)  {   if (toolStripProgressBar_save.Value < 30)   {    for(int i=0;i<4;i++)    {     toolStripProgressBar_save.PerformStep();    }   }   toolStripLabel_save.Text = "30%";  }  private void button_50_Click(object sender, EventArgs e)  {   if (toolStripProgressBar_save.Value < 50)   {    for (int i = 0; i < 4; i++)    {     toolStripProgressBar_save.PerformStep();    }   }   toolStripLabel_save.Text = "50%";  }  private void button_60_Click(object sender, EventArgs e)  {   if (toolStripProgressBar_save.Value < 60)   {    for (int i = 0; i < 2; i++)    {     toolStripProgressBar_save.PerformStep();    }   }   toolStripLabel_save.Text = "60%";  }  private void button_80_Click(object sender, EventArgs e)  {   if (toolStripProgressBar_save.Value < 80)   {    for (int i = 0; i < 4; i++)    {     toolStripProgressBar_save.PerformStep();    }   }   toolStripLabel_save.Text = "80%";  }  private void button_100_Click(object sender, EventArgs e)  {   if (toolStripProgressBar_save.Value < 100)   {    for (int i = 0; i < 4; i++)    {     toolStripProgressBar_save.PerformStep();    }       }   toolStripLabel_save.Text = "Complete!";  }  #endregion  private void button_save_Click(object sender, EventArgs e)  {   Save.Singleton().SaveAll();  } }

public class Save {  private static Save _instance = null;  private Form1 n = null;  public void SaveAll()  {   getWnd();   n.toolStripProgressBar_save.Minimum = 0;   n.toolStripProgressBar_save.Maximum = 100;   //清空进度表   n.toolStripProgressBar_save.Value = 0;   n.toolStripProgressBar_save.Step = 5;   #region 保存过程-与单独按钮是一样的   if (n.toolStripProgressBar_save.Value < 10)   {       for (int i = 0; i < 2; i++)    {     n.toolStripProgressBar_save.PerformStep();     n.toolStripLabel_save.Text = n.toolStripProgressBar_save.Value.ToString() + "%";    }   }   Thread.Sleep(1000);   if (n.toolStripProgressBar_save.Value < 30)   {    for (int i = 0; i < 4; i++)    {     n.toolStripProgressBar_save.PerformStep();     n.toolStripLabel_save.Text = n.toolStripProgressBar_save.Value.ToString()+"%";    }   }   Thread.Sleep(100);   if (n.toolStripProgressBar_save.Value < 50)   {    for (int i = 0; i < 4; i++)    {     n.toolStripProgressBar_save.PerformStep();     n.toolStripLabel_save.Text = n.toolStripProgressBar_save.Value.ToString() + "%";    }   }   Thread.Sleep(100);   if (n.toolStripProgressBar_save.Value < 60)   {    for (int i = 0; i < 2; i++)    {     n.toolStripProgressBar_save.PerformStep();     n.toolStripLabel_save.Text = n.toolStripProgressBar_save.Value.ToString() + "%";    }   }   Thread.Sleep(100);   if (n.toolStripProgressBar_save.Value < 80)   {    for (int i = 0; i < 4; i++)    {     n.toolStripProgressBar_save.PerformStep();     n.toolStripLabel_save.Text = n.toolStripProgressBar_save.Value.ToString() + "%";    }   }   Thread.Sleep(100);   if (n.toolStripProgressBar_save.Value < 100)   {    for (int i = 0; i < 4; i++)    {     n.toolStripProgressBar_save.PerformStep();     n.toolStripLabel_save.Text = n.toolStripProgressBar_save.Value.ToString() + "%";    }   }   n.toolStripLabel_save.Text = "Complete!";   Thread.Sleep(100);   #endregion  }  //查找当前打开的窗体，必须有这个才能传递数据  private void getWnd()  {   foreach(Form fm in Application.OpenForms)   {    if (fm.Name == "Form1")    {     n = (Form1)fm;     break;    }   }  }  public static Save Singleton()  {   if (_instance == null)   {    _instance = new Save();   }   return _instance;  } }