asp.net动态添加控件和获取控件的值

asp.net动态添加控件和获取控件的值
有很多时候我们需要动态的添加控件，以适应客户的需求，下面的小例子演示了如何动态的添加控件和获取控件的值。
1、添加控件

  protected   void  Page_Load( object  sender, EventArgs e)
     {
        int counts = 4;//假设添加四个控件
        for (int i = 1; i <= counts; i++)
        {
            TableRow row = new TableRow();
            TableCell cellHead = new TableCell();
            TableCell cellContent = new TableCell();
            Label LabelAuditing = new Label();
            TextBox TextAuditing = new TextBox();
            LabelAuditing.ID = "LabelAuditing" + i.ToString();
            LabelAuditing.Text = "LabelAuditing" + i.ToString();
            TextAuditing.ID = "TextAuditing" + i.ToString();
            TextAuditing.Height = 18;
            cellHead.Controls.Add(LabelAuditing);
            cellContent.Controls.Add(TextAuditing);             
            cellHead.BackColor = System.Drawing.Color.FromName("#EFEFEF");
            cellHead.BorderWidth = 1;
            cellHead.BorderColor = System.Drawing.Color.FromName("#CCCCCC");
            cellHead.HorizontalAlign = HorizontalAlign.Left;
            cellHead.Width = 60;
            cellContent.BorderColor = System.Drawing.Color.FromName("#CCCCCC");
            cellContent.BackColor = System.Drawing.Color.FromName("#EFEFEF");
            cellContent.BorderWidth =1;
            cellContent.HorizontalAlign = HorizontalAlign.Left;
            cellContent.Width = 100;
            row.Cells.Add(cellHead);
            row.Cells.Add(cellContent);
            row.Height = 22;
            this.Table1.BorderColor = System.Drawing.Color.FromName("#CCCCCC");            
            this.Table1.Width = 400;
            this.Table1.Rows.Add(row);
        }
    }

2、获取控件的值

protected   void  Button1_Click( object  sender, EventArgs e)
     {
        string str = string.Empty;
        for (int i = 1; i <= 4; i++)
        {
            str += ((TextBox)this.FindControl("TextAuditing" + i.ToString())).Text+"<br>";//获取控件的值
        }
        this.LabelMsg.Text = str;
    }

3、前台的代码

< form id = " form1 "  runat = " server " >
     < div >
         < br  />
         < table border = " 0 "  cellpadding = " 0 "  cellspacing = " 0 "  style = " width: 400px; height: 134px " >
             < tr >
                 < td  class = " tabnotop "   style = " height: 18px " >
         < asp:Table ID = " Table1 "  runat = " server "  CellPadding = " 0 "  CellSpacing = " 0 "  Height = " 56px "
            Width = " 142px "  BorderWidth = " 1px " >
         </ asp:Table >
                 </ td >
             </ tr >
             < tr >
                 < td style = " height: 29px; text-align: center " >
                     < asp:Button ID = " Button1 "  runat = " server "  CssClass = " btnew "  OnClick = " Button1_Click "
                        Text = " 确定 "   /></ td >
             </ tr >
         </ table >
         < asp:Label ID = " LabelMsg "  runat = " server " ></ asp:Label >< br  />
         & nbsp; < br  />
    
     </ div >
     </ form >

4、运行结果