我用过DataGridView实现用户名密码 UI。密码显示在DataGridViewTextBoxColumn类型列。我如何使用现有的代码DataGridViewTextBoxColumn并为文本实现密码属性？

处理EditingControlShowing事件，然后将编辑控件投射到TextBox并手动设置UseSystemPasswordChar为真：

TextBox passwordText = e.Control as TextBox;
if (passwordText != null)
{
    passwordText.UseSystemPasswordChar = true;
}

Edit

你能试试这个吗：

private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
    if (dataGridView1.Columns[e.ColumnIndex].Name == “passwordDataGridViewTextBoxColumn” && e.Value != null)
    {
        dataGridView1.Rows[e.RowIndex].Tag = e.Value;
        e.Value = new String(‘*’, e.Value.ToString().Length);
    }
}
private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
    if (dataGridView1.CurrentRow.Tag != null)
        e.Control.Text = dataGridView1.CurrentRow.Tag.ToString();
}