如何解决以下文本中的错误。 [英] How to solve error under the following text .

问题描述

除非datagridview数据绑定到支持更改通知并允许删除的IBindingList，否则无法以编程方式删除行。



复制的其他信息来自下面的非解决方案

"Rows cannot be programmatically removed unless the datagridview is data-bound to an IBindingList that support change notification and allows deletion."

additional information copied from non-solution below

// Fill Data in grid table
private void btnAddRow_Click(object sender, EventArgs e)
{
   if (grdUserlist.Rows.Count > 0)
   {
      if (lstUserList.Count > 0)
      {
         foreach (var item in  userbol.UserListByGroupIDForMessage())
         {
            lstUserList.Add(item);
         }
      }
      else
      {
         lstUserList = null;
         lstUserList = userbol.UserListByGroupIDForMessage();
      }

      if (lstUserList.Count > 0)
      {
         grdUserlist.DataSource = null;
         grdUserlist.DataSource = lstUserList;
      }
   }
}

// Delete rows function
private void btnDelete_Click(object sender, EventArgs e)
{
   for (int i = 0; i < grdUserlist.Rows.Count;i++ )
   {
      DataGridViewRow delrow=grdUserlist.Rows[i];
      if(delrow.Selected==true)
      {
         grdUserlist.Rows.RemoveAt(i);
      }
   }
}

推荐答案

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无法以编程方式删除行 [ ^ ]

check this similar post:


Rows cannot be programmatically removed[^]

你不能使用

you can't use

grdUserlist.Rows.RemoveAt(i);

因为我认为你在使用 IBindingList 。

如果您在程序上添加代码如

as i think you are using IBindingList.
if you add the code programtically like

datagridview1.Rows.Add();

然后就可以了。

Then it would have worked.

试试这个：

Try this:

private void btnDelete_Click(object sender, EventArgs e)
{
    if (!(e.RowIndex < 0 || e.ColumnIndex < 0))
    {
        DataGridViewButtonCell cell = grdUserlist.Rows[e.RowIndex].Cells[e.ColumnIndex] as DataGridViewButtonCell;
        if (cell != null)
            grdUserlist.Rows.RemoveAt(cell.RowIndex);
    }
}

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