How to select an bounded combo box value and display its value into an Label Text

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I have an ComboBox1 which is bounded by EmpId which is an primary key also.. when i used the code

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
label5.Text = comboBox1.DisplayMember;
}

it gives an error-

Column 'EmpId' is constrained to be unique. Value 'Emp008' is already present.

My question is How to select that bounded value and display it into an Label text..

Posted 29-Mar-14 3:28am

Mayank Cool

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Mayank Cool · Answer 1 · 2014-03-30T23:08:00

private void bind()
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["AttendanceManagmentSystem.Properties.Settings.Cons1"].ConnectionString);
con.Open();
SqlDataAdapter da = new SqlDataAdapter("Select EmpId from EmpDetail", con);
DataTable dt = new DataTable();
da.Fill(dt);
comboBox1.DisplayMember = "EmpId";
comboBox1.ValueMember = "EmpId";
comboBox1.DataSource = dt;
con.Close();
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
label5.Text = comboBox1.Text;
}