设置DataGridView单元格值并添加一个新行 [英] Set DataGridView cell value and add a new row

问题描述

我有一个DataGridView有两列。当单击第一列中的单元格时，将显示一个OpenFileDialog，当我选择一个文件时，第二列中的单元格值将被设置为所选文件名。这是代码：

  private void dataGridView1_CellContentClick（
 object sender，DataGridViewCellEventArgs e）
 {
 if（e.ColumnIndex == 0）
 {
 SelectFile（e.RowIndex）; 
} 
} 
 
 private void SelectFile（int rowIndex）
 {
 if（openFileDialog.ShowDialog（）== DialogResult.OK）
 {
 dataGridView1.Rows [rowIndex] .Cells [1] .Value = 
 openFileDialog.FileName; 
} 
} 
  

这样做，但是我想要一个新行当单元格值被设置时被添加。当我手动编辑单元格时，会发生这种情况，该行处于编辑状态，下面添加一个新行。当我以编程方式设置单元格值时，我想同样会发生。

当我的表单首先显示DataGridView为空，唯一的行显示为（* sign - IsNewRow为true）。当我手动编辑该行中的单元格时，将进入编辑状态（铅笔符号），并添加一个新的空行。当我使用上面的代码时，这不会发生。行仍然是IsNewRow（* sign），并且没有添加新行。

解决方案

使用此代码，您可以执行所需的操作。我用同样的原因：

  myGrid.NotifyCurrentCellDirty（true）; 
  

此答案的来源：
以编程方式使新行脏，并插入新的在DataGridView 之后的行

I have a DataGridView with two columns. When a cell in the first column is clicked, an OpenFileDialog is shown and when I select a file, the cell in the second column value is set to the selected file name. Here is the code:

private void dataGridView1_CellContentClick(
    object sender, DataGridViewCellEventArgs e)
{
    if (e.ColumnIndex == 0)
    {
        SelectFile(e.RowIndex);
    }
}

private void SelectFile(int rowIndex)
{
    if (openFileDialog.ShowDialog() == DialogResult.OK)
    {
        dataGridView1.Rows[rowIndex].Cells[1].Value =
            openFileDialog.FileName;
    }
}

This works, but I would like a new row to be added when the cell value is set. This happens when I edit the cell manually, the row gets in 'edit' state and a new row is added below. I would like the same to happen when I set the cell value programmatically.

[edit]

When my form is first shown the DataGridView is empty and the only row is shown is the one with (* sign - IsNewRow is true). When I manually edit a cell in that row it goes into edit state (pencil sign) and a new empty row is added. This doesn't happen when I use the above code. The row remains as IsNewRow (* sign) and a new row is not added.

解决方案

With this code you can do what you want to do. I Used it for the same reason:

myGrid.NotifyCurrentCellDirty(true);

Source of this answer: Make new row dirty programmatically and insert a new row after it in DataGridView

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