How to disable combo box?

Question

2.00/5 (1 vote)

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Hi,

I have three combo box in my .net windows application.In 1st combo box i have two option like India and Foreign. If i select india in 1st combo box,the third combo box will have to disabled. if i choose foreign in 1st combo box ,the 2nd combo box will have to disabled. This is my question.Kindly send me the coding.

C#

protected void combobox1_SelectedIndexChanged(object sender, EventArgs e)
{
if(combobox1.SelectVelue == "indian")
{
combobox3.Enable = false;
combobox2.Enable = true;
}
else if (combobox1.SelectVelue == "Foreign")
{
combobox3.Enable = true;
combobox2.Enable = False;
}
Else
{
combobox3.Enable = true;
combobox2.Enable = true;
}
}

This code is not work..So please send any other..

Thanks,
Viswanathan.M

Posted 8-Jul-11 5:47am

Viswanthan.M.

Updated 8-Jul-11 7:19am

v4

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2 solutions

Solution 1

C#

switch (combo1.SelectedValue)
{
    case "India" : 
        combo3.Enabled = false;
        combo2.Enabled = true;
        break;
    case "Foreign" :
        combo3.Enabled = true;
        combo2.Enabled = false;
        break;
    default:
        combo3.Enabled = true;
        combo2.Enabled = true;
        break;
}

This is easily found on Google.

Posted 8-Jul-11 6:01am

#realJSOP

Updated 8-Jul-11 6:02am

v3

Comments

Viswanthan.M. 8-Jul-11 12:15pm

Thank you... one more doubt.. At what event i can write this code?

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ahmedfaruk88 · Accepted Answer · 2011-07-08T06:38:00

You as well archive this task using an if statement (Becasue your question is if combobox1 value == "india" the third combo box will have to disabled) and (If combobox1 value == "Foreign" 2nd combo box will have to disabled)

You can create a function to hold this and use it like this or just Double click the combo box from the designer view in your IDE

protected void combobox1_SelectedIndexChanged(object sender, EventArgs e)
{
if(combobox1.SelectVelue == "indian")
{
combobox3.Enable = false;
combobox2.Enable = true;
}
else if (combobox1.SelectVelue == "Foreign")
{
combobox3.Enable = true;
combobox2.Enable = False;
}
Else
{
combobox3.Enable = true;
combobox2.Enable = true;
}
}