C# Win 窗体 DataGridView 动态添加按钮列
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Win form DataGridView dynamically adding button column
提问by Zoman
I'd like to add a button column dynamically to a DataGridView after it has been populated. The button column is visible after adding it, but when I try to loop through the DataGridView rows, I get a null for the button in each cell.
我想在填充后将按钮列动态添加到 DataGridView。添加按钮列后可见，但是当我尝试遍历 DataGridView 行时，每个单元格中的按钮都为空。
var buttonCol = new DataGridViewButtonColumn();
buttonCol.Name = "ButtonColumnName";
buttonCol.HeaderText = "Header";
buttonCol.Text = "Button Text";
dataGridView.Columns.Add(buttonCol);
foreach (DataGridViewRow row in dataGridView.Rows)
{
var button = (Button)row.Cells["ButtonColumnName"].Value;
// button is null here!
}
采纳答案by Graham Clark
I tried the exact same thing a while ago and couldn't get it working; my solution (as it was just a test application) was to change the background colour of the button cell and test for that. Pretty awful. However, looking back at the code - have you tried casting the row.Cells["ButtonColumnName"]to a DataGridViewButtonCelland then checking out the properties on that?
不久前我尝试了完全相同的事情，但无法使其正常工作；我的解决方案（因为它只是一个测试应用程序）是更改按钮单元的背景颜色并进行测试。好可怕。但是，回顾代码 - 您是否尝试row.Cells["ButtonColumnName"]将 a转换为 aDataGridViewButtonCell然后检查其属性？
回答by spatulon
You might find this MSDN article useful: How to: Disable Buttons in a Button Column in the Windows Forms DataGridView Control
您可能会发现这篇 MSDN 文章很有用：如何：禁用 Windows 窗体 DataGridView 控件中按钮列中的按钮
回答by SO User
Use
用
foreach (DataGridViewRow row in dataGridView.Rows)
{
DataGridViewButtonCell button = (row.Cells["ButtonColumnName"] as DataGridViewButtonCell);
}
回答by DeepakV
Use this:
用这个：
foreach (DataGridViewRow row in dataGridView.Rows)
{
// DataGridViewButtonCell button = (row.Cells["ButtonColumnName"] as DataGridViewButtonCell);
row.Cells["ButtonColumnName"].Value = "ButtonText";
}
回答by Peyman Panjehbashi
You must add the bellow code in your code, then you can see "Button Text" on each boutton:
您必须在代码中添加以下代码，然后您可以在每个按钮上看到“按钮文本”：
buttonCol.UseColumnTextForButtonValue = true;
