Question : How give value to dropdown in Windows application

Hi,
I has dropdown in windows application . If i not selecting anything from dropdown i need to show message box . but i geting object reference error
my code is

if (ddlComp.SelectedItem.ToString().Length < 1)
{
MessageBox.Show("Please select Type");
}

and i need to know how give values to dropdown in windows application?

Answer : How give value to dropdown in Windows application

Hi!

>>> i need "select type " on when open the form

Then try like this:

                       
             private void Form1_Load(object sender, EventArgs e)
{
   comboBox1.Items.Add("Item1");
   comboBox1.Items.Add("Item2");
   comboBox1.Items.Add("Item3");
   combobox1.Text="Select Type";
}

Question : How give value to dropdown in Windows application

Answer : How give value to dropdown in Windows application

Hi!>>> i need "select type " on when open the form Then try like this: 1: 2: 3: 4: 5: 6: 7: private void Form1_Load(object sender, EventArgs e) { comboBox1.Items.Add("Item1"); comboBox1.Items.Add("Item2"); comboBox1.Items.Add("Item3"); combobox1.Text="Select Type"; }

Hi!

>>> i need "select type " on when open the form

Then try like this:

1: 2: 3: 4: 5: 6: 7:

private void Form1_Load(object sender, EventArgs e) { comboBox1.Items.Add("Item1"); comboBox1.Items.Add("Item2"); comboBox1.Items.Add("Item3"); combobox1.Text="Select Type"; }