Combobox's elements filtering

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I have combobox1 and comboox2 and in combobox1 my elements are A,B,C and combobox2 1,2,3,4,5,6...

A related 1,2,3 and B related 3,4 and C related 5,6.When I choose "A" I want to see just 1,2,3 ; when select "B" just 3,4 etc.

How can I imagine it ?

I tried to do in selected index changed but I didn't

Posted 24-Jul-12 2:05am

y.baris

Updated 24-Jul-12 2:06am

Prasad_Kulkarni

v2

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dimpledevani 24-Jul-12 8:07am

On selectionChangeCommitted event of first combobox,check if its a,b or c.According to it keep the required elements and remove the unrequired of second combobox

y.baris 24-Jul-12 8:25am

I dont know how to remove unrequired of second combobox

OriginalGriff 24-Jul-12 8:08am

What did you try to do in the SelectedIndexChanged event?
What happened? What didn't?

y.baris 24-Jul-12 8:26am

I tried if A is clicked then I want to see just 1,2,3 propertys in combobox2 but I didn't...
or can you offer better solution ??

dimpledevani 24-Jul-12 8:32am

combobox.items.remove(), search about this and you will find it

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ernesto fazolo · Answer 1 · 2012-07-24T02:40:00

Hello,

Try This:

C#

private void Form1_Load(object sender, EventArgs e)
{            
    comboBox1.Items.AddRange(new string[] { "A", "B", "C" });
    comboBox1.SelectedIndex = -1;
    comboBox2.Items.Clear();
}

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    comboBox2.Items.Clear();
    switch (comboBox1.SelectedItem.ToString())
    {
        case "A":
            comboBox2.Items.AddRange(new string[] { "1", "2", "3" });
            break;

        case "B":
            comboBox2.Items.AddRange(new string[] { "3", "4"});        
            break;

        case "C":
            comboBox2.Items.AddRange(new string[] { "5", "6" });    
            break;
        default:
            break;
    }
    comboBox2.SelectedIndex = -1;
}

Att.
Ernesto Fazolo