如何在 DataGridView 中为列设置密码
How to Password Char a Column in DataGridView
我试图在加载 table 时对列进行密码处理。
下面的代码加载 table.
//Fills out Student table
private void loadStudentTable()
{
SqlConnection conn2 = new SqlConnection(@"Data Source=(LocalDB)\v11.0; AttachDbFilename=C:\Users\Donald\Documents\Visual Studio 2013\Projects\DesktopApplication\DesktopApplication\Student_CB.mdf ;Integrated Security=True");
conn2.Open();
try
{
SqlCommand cmdDatabase2 = new SqlCommand("Select * from Student", conn2);
SqlDataAdapter sda2 = new SqlDataAdapter();
sda2.SelectCommand = cmdDatabase2;
DataTable dbdataset2 = new DataTable();
sda2.Fill(dbdataset2);
BindingSource bSource2 = new BindingSource();
bSource2.DataSource = dbdataset2;
studentGridView.DataSource = bSource2;
sda2.Update(dbdataset2);
studentGridView.Columns[0].Width = 92;
studentGridView.Columns[1].Width = 200;
studentGridView.Columns[2].Width = 180;
studentGridView.Columns[3].Width = 180;
studentGridView.Columns[4].Width = 170;
studentGridView.Columns[5].Width = 170;
studentGridView.Columns[6].Width = 130;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
conn2.Close();
}
我正在尝试为 studentGridView.Columns[5].Width = 170;
列设置密码字符。
有什么帮助或想法吗?
您需要这样 DataGridView
的 CellFormatting
活动
private void studentGridView_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
if (gv_Input.Columns[e.ColumnIndex].Index == 5 && e.Value != null)
{
studentGridView.Rows[e.RowIndex].Tag = e.Value;
e.Value = new String('*', e.Value.ToString().Length);
}
}
我试图在加载 table 时对列进行密码处理。
下面的代码加载 table.
//Fills out Student table
private void loadStudentTable()
{
SqlConnection conn2 = new SqlConnection(@"Data Source=(LocalDB)\v11.0; AttachDbFilename=C:\Users\Donald\Documents\Visual Studio 2013\Projects\DesktopApplication\DesktopApplication\Student_CB.mdf ;Integrated Security=True");
conn2.Open();
try
{
SqlCommand cmdDatabase2 = new SqlCommand("Select * from Student", conn2);
SqlDataAdapter sda2 = new SqlDataAdapter();
sda2.SelectCommand = cmdDatabase2;
DataTable dbdataset2 = new DataTable();
sda2.Fill(dbdataset2);
BindingSource bSource2 = new BindingSource();
bSource2.DataSource = dbdataset2;
studentGridView.DataSource = bSource2;
sda2.Update(dbdataset2);
studentGridView.Columns[0].Width = 92;
studentGridView.Columns[1].Width = 200;
studentGridView.Columns[2].Width = 180;
studentGridView.Columns[3].Width = 180;
studentGridView.Columns[4].Width = 170;
studentGridView.Columns[5].Width = 170;
studentGridView.Columns[6].Width = 130;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
conn2.Close();
}
我正在尝试为 studentGridView.Columns[5].Width = 170;
列设置密码字符。
有什么帮助或想法吗?
您需要这样 DataGridView
的 CellFormatting
活动
private void studentGridView_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
if (gv_Input.Columns[e.ColumnIndex].Index == 5 && e.Value != null)
{
studentGridView.Rows[e.RowIndex].Tag = e.Value;
e.Value = new String('*', e.Value.ToString().Length);
}
}