屏蔽datagridview中的密码列 [英] Masking password column in datagridview

问题描述

我在屏蔽密码列时遇到问题.下面的代码可以工作，但是不能按照我想要的方式工作.在编辑它时，它会掩盖密码，但是当我完成操作并继续下一个操作时，下一个datagridviewcell密码将变为可见.

I'm having problem with masking the password column. The code below works, but it doesnt work the way I want. While editing it do mask the password but when I am done and continue to the next datagridviewcell password becomes visible.

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{            
        if (  dataGridView1.CurrentCell.ColumnIndex == 5 || dataGridView1.CurrentCell.ColumnIndex == 10)//select target column
        {
            TextBox textBox = e.Control as TextBox;
            if (textBox != null)
            {
                textBox.UseSystemPasswordChar = true;
            }                
        }
        var txtBox = e.Control as TextBox;
        txtBox.KeyDown -= new KeyEventHandler(underlyingTextBox_KeyDown);
        txtBox.KeyDown += new KeyEventHandler(underlyingTextBox_KeyDown);
}

在编辑模式下，它也应该仅屏蔽索引为5&&的列. 10但是它掩盖了所有列. 我无法解决这些问题，任何帮助都会很棒.

Also in edit mode it should have mask only the columns with index 5 && 10 however it masks all columns. I cannot solve these issues, any help would be great.

推荐答案

    private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
    {
        if ((e.ColumnIndex == 5 || e.ColumnIndex == 10) && e.Value != null)
            {
                dataGridView1.Rows[e.RowIndex].Tag = e.Value;
                e.Value = new String('\u25CF', e.Value.ToString().Length);
            }
    }

    private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
    {
        if (dataGridView1.CurrentCell.ColumnIndex == 5 || dataGridView1.CurrentCell.ColumnIndex == 10)//select target column
        {
            TextBox textBox = e.Control as TextBox;
            if (textBox != null)
            {
                textBox.UseSystemPasswordChar = true;
            }
        }
        else
        {
            TextBox textBox = e.Control as TextBox;
            if (textBox != null)
            {
                textBox.UseSystemPasswordChar = false;
            }
        }
        var txtBox = e.Control as TextBox;
        txtBox.KeyDown -= new KeyEventHandler(underlyingTextBox_KeyDown);
        txtBox.KeyDown += new KeyEventHandler(underlyingTextBox_KeyDown);
    }

这篇关于屏蔽datagridview中的密码列的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！