Question

我有一个带有DataGridView的表单和一个带有toolStripButton的BindingNavigator。因此，我需要在选择任何单元格时禁用BindingNavigator的ToolStripButton，并在选择至少一个单元格时启用它。我已尝试使用CellClick事件和SelectionChanged事件，但我无法解决此问题。

private void myDataGridView_CellEnter(object sender, DataGridViewCellEventArgs e)
{
if (myGridView.Columns[e.ColumnIndex].Name == "findValueDataGridViewTextBoxColumn"
                   || myDataGridView.Columns[e.ColumnIndex].Name == "replaceValueDataGridViewTextBoxColumn")
                {
                    myDropDownButton.Enabled = true;
                }
                else
                {
                   myDropDownButton.Enabled = false;
                }
}

知道怎么做吗？

Answer 1

使用index而不是name和DataGridViewCellCancelEventArgs而不是DataGridViewCellEventArgs。

示例

private void dataGridView1_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
{
    string msg = String.Format("Editing Cell at ({0}, {1})",
        e.ColumnIndex, e.RowIndex);
//You go to your datagrid and identify the index of the replaceValueDataGridViewTextBoxColumn
//e.g Int ColIndex1 = replaceValueDataGridViewTextBoxColumn index 0 fro the first , 1 for second etc.
  if(e.ColumnIndex  = ColIndex1  || e.ColumnIndex = ColIndex2)
  {
      myDropDownButton.Enabled = true;
   }
   // this.Text = msg;
}

在你的情况下

private void myDataGridView_CellEnter(object sender, DataGridViewCellCancelEventArgs e)
{
//get the column index of your columns 
//Here you dont need to call grid name just e is enough 
//Note you can try e.Name may be , but i didn't 
if (e.ColumnIndex == colIndex1 || e.ColumnIndex == colIndex2)
    {
           myDropDownButton.Enabled = true;
     }
  else
     {
            myDropDownButton.Enabled = false;
       }
}

或尝试如下，设置断点并查看colName的值。

private void dataGridView1_CellMouseEnter(object sender,
    DataGridViewCellEventArgs e)
{
   string colName= (string)dataGridView1.Columns[e.ColumnIndex].Name
}

请查看Here和Here以获取完整说明。

Answer 2

您可以使用SelectedCells的{{1}}属性：

DataGridView

检测是否选择了DataGridView中的至少一个单元格

2 个答案: