有时我想隐藏DataGridViewButtonColumn中的按钮

Question

我有一个DataGridView是前一个问题(链接)的主题.但有时按钮是null.这可以.但是如果它是null,有没有办法我可以选择删除/添加(显示/隐藏？)按钮到DataGridViewButtonColumn按钮

像这样:

+------------+------------+
| MyText     | MyButton   |
+------------+------------+
| "do this"  | (Yes)      |
| "do that"  | (Yes)      |
| FYI 'blah' |            | <---- this is where I optionally want no button
| "do other" | (Yes)      |
+------------+------------+

这是我到目前为止所尝试的(基于此示例)

private void grdVerdict_CellFormat(object sender, DataGridViewCellFormattingEventArgs e)
{
   if (e.ColumnIndex == grdChoice.Columns["yesbutton"].Index)
   {
       if (grdVerdict[e.ColumnIndex, e.RowIndex].Value == null)
       {
            //grdVerdict[e.ColumnIndex, e.RowIndex].Visible = false; //<-says 'it is read only'
            //grdVerdict[e.ColumnIndex, e.RowIndex].Value = new DataGridTextBox(); //<- draws 'mad red cross' over whole grid
            //((Button)grdVerdict[e.ColumnIndex, e.RowIndex]).Hide; //<- won't work
       }
       else
       {
          e.Value = ((Button)grdChoice[e.ColumnIndex, e.RowIndex].Value).Text;
       }
   }
}

Answer 1

我今天遇到了同样的"问题".我也想隐藏某些行的按钮.在玩了一段时间之后,我发现了一个非常简单和漂亮的解决方案,它不需要任何重载paint()功能或类似的东西:

只需DataGridViewCellStyle为这些单元格指定不同的.
关键是,您padding将此新样式的属性设置为一个值,该值将整个按钮移出单元格的可见区域.
而已!:-)

样品:

System::Windows::Forms::DataGridViewCellStyle^  dataGridViewCellStyle2 = (gcnew System::Windows::Forms::DataGridViewCellStyle());
dataGridViewCellStyle2->Padding = System::Windows::Forms::Padding(25, 0, 0, 0);

dgv1->Rows[0]->Cells[0]->Style = dataGridViewCellStyle2;
// The width of column 0 is 22.
// Instead of fixed 25, you could use `columnwidth + 1` also.