发生mscorlib.dll错误时发生未处理的“System.StackOverflowException”类型异常？

问题描述

收到错误未绑定表达式。我创建了一个新专栏&运行时无界表达式。我从gridview获取特定的单元格值（GetRowCellValue）并尝试使用新值（SetRowCellValue）更改该未绑定的表达式列。但错误显示我的错误？帮助我。



这是我的代码。

Am getting error Unbound Expression. I Created a new column & Unbounded Expression on Runtime. I get a particular cell values(GetRowCellValue) from gridview and try to change that unbound expression column with new value(SetRowCellValue). But error shown whats my mistake ? Help me.

This is my Code.

private void gridView1_CustomUnboundColumnData(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs e)
   {

           GridView view = sender as GridView;


           if (e.Column.FieldName == "PriceQuantity" && e.IsGetData)
           {
               //e.Value = getTotalValue(view, e.ListSourceRowIndex);
               calfun();
           }
           else
           {
               // nothing
           }

   }


   private void calfun()
   {
       if (gridView1.FocusedRowHandle >= 1)
       {

           string temp = "Discount";
           //string dis = TXE_Gettype.Text.ToString();
           object objec = gridView1.GetRowCellValue(gridView1.FocusedRowHandle, gridView1.Columns["Type"]);
           string dis = objec.ToString();

           if (dis == temp)
           {
               object obj = gridView1.GetRowCellValue(gridView1.FocusedRowHandle - 1, gridView1.Columns["Each"]);

               int aa = Convert.ToInt32(obj);
               //textEdit1.Text = aa.ToString();

               object obj1 = gridView1.GetRowCellValue(gridView1.FocusedRowHandle, gridView1.Columns["Each"]);

               int a = Convert.ToInt32(obj1);
               int b = aa;

               int c = a * b;

               //textEdit2.Text = c.ToString();

               gridView1.SetRowCellValue(gridView1.FocusedRowHandle, gridView1.Columns["PriceQuantity"], c);
           }
       }
       else
       {
           }
   }

推荐答案

private void gridView1_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e) {
    GridView view = sender as GridView;
    if (e.Column.FieldName == "Total" && e.IsGetData)
        e.Value = getTotalValue(view, e.ListSourceRowIndex);
}

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