If you want to hide the password value in a Visual Studio DataGridView control, you can use the code below. If a user clicks into the cell to edit the value, then the current value becomes visible.
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);
}
}
{
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();
}
I found the example above on this web page, in a non-english language: