需要在DataGridView的2个事件中写代码!下面的代码把第4列设置为密码列(显示为*号):
/// <summary>
/// 单元格显示格式事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
// 把第4列显示*号,*号的个数和实际数据的长度相同
if (e.ColumnIndex == 3)
{
if (e.Value != null && e.Value.ToString().Length > 0)
{
e.Value = new string('*',e.Value.ToString().Length);
}
}
}
/// <summary>
/// 编辑单元格控件事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
// 编辑第4列时,把第4列显示为*号
TextBox t = e.Control as TextBox;
if (t != null)
{
if (this.dataGridView1.CurrentCell.ColumnIndex == 3)
t.PasswordChar = '*';
else
t.PasswordChar = new char();
}
}
/// 单元格显示格式事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
// 把第4列显示*号,*号的个数和实际数据的长度相同
if (e.ColumnIndex == 3)
{
if (e.Value != null && e.Value.ToString().Length > 0)
{
e.Value = new string('*',e.Value.ToString().Length);
}
}
}
/// <summary>
/// 编辑单元格控件事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
// 编辑第4列时,把第4列显示为*号
TextBox t = e.Control as TextBox;
if (t != null)
{
if (this.dataGridView1.CurrentCell.ColumnIndex == 3)
t.PasswordChar = '*';
else
t.PasswordChar = new char();
}
}