Combobox hint text

Question

I need to make a combobox with hint text "Pick a Value" and when start typing the value to be cleared and when its null to change the Combobox's text to Pick Value

In Form Load

comboBox1.Text = "Pick a Value";
comboBox1.SelectedIndex = -1;

The problem here is that the cusrsor position doesnt work. It selects all my text

In TextChanged

private void comboBox1_TextChanged(object sender, EventArgs e)
{
   if (comboBox1.Text.Length == 0)
   {
      comboBox1.Text = "Pick a Value";
   }
}

I need this code be working only if user clears the Combobox with backspase not if i will use ComboBox.Text = "" in mouse click;

example

private void comboBox1_MouseClick(object sender, MouseEventArgs e)
{
   //This conflicts the comboBox1_TextChanged event
   comboBox1.Text = "";
}

And in the end i need a code to clearing text if user start typing.

You are probably looking for `CueBanner`. Not sure because `I need....I need..I need` is not a question — Ňɏssa Pøngjǣrdenlarp, Jan 23 '18 at 22:07
So when the user clicks on the combo box, you want it to clear the text? — Aluan Haddad, Jan 23 '18 at 22:11
Target Google to find `CueBanner` posts - its built into windows — Ňɏssa Pøngjǣrdenlarp, Jan 23 '18 at 22:15
If you use `null` instead of `""` it will work. if `comboBox1.Text == null`/`comboBox1.Text = null` — Aluan Haddad, Jan 23 '18 at 22:16

score 0 · Answer 1 · answered Jan 24 '18 at 01:14

You can you the isNullOrWhiteSpace on the TextChanged event

Something like this

if(string.IsNullOrWhiteSpace(combobox.Text))
{
      combobox.Text = "Pick a value";
}

But if you wanna get the desired efect, you should play with font color and opacity,or something like a watermark.

Link for watermark : https://msdn.microsoft.com/en-us/library/bb613590(v=vs.100).aspx

Also, this could help : Watermark for Textbox

Combobox hint text

In Form Load

In TextChanged

example

1 Answers1