dropdown list problem

Question

hello,

my problem is that:-

i'v 3 dropdown lists and by default 1st one will display and other are hide.

when we select any value from 1 then it should be display other two.

for ex:-

ddl1 if we select values between 1-2 it should be display other dropdown but if values are <2 then other should display.

1

2

3

4

5

so how can i achieve this.

i gave following code but not working:-

protected void DropDownList5_SelectedIndexChanged(object sender, EventArgs e)

{

int adlt = Convert.ToInt32(DropDownList5.SelectedValue);

if (adlt <= 2)

{

Label10.Visible = false;

Label11.Visible = false;

DropDownList7.Visible = false;

DropDownList8.Visible = false;

}

else

{

Label10.Visible = true;

Label11.Visible = true;

DropDownList7.Visible = true;

DropDownList8.Visible = true;

}

please help me.

Abhimanyu K Vatsa · Answer

this will help you.. ASPX Page Code Behind protected void CheckBox1_CheckedChanged(object sender, EventArgs e) { if (CheckBox1.Checked == true) { ddlCountry.Enabled = true; ddlCountry.Items.Add("Select"); ddlCountry.Items.Add("India"); ddlCountry.Items.Add("USA"); } } protected void ddlCountry_SelectedIndexChanged(object sender, EventArgs e) { ddlState.Enabled = true; if (ddlCountry.SelectedIndex == 1) { ddlState.Items.Add("Select"); ddlState.Items.Add("Bokaro"); ddlState.Items.Add("Dhanbad"); } if (ddlCountry.SelectedIndex == 2) { ddlState.Items.Add("Select"); ddlState.Items.Add("Opt1"); ddlState.Items.Add("Opt2"); } } protected void ddlState_SelectedIndexChanged(object sender, EventArgs e) { ddlCity.Enabled = true; if (ddlCountry.SelectedIndex == 1 && ddlCountry.SelectedIndex == 1) { ddlCity.Items.Add("Select"); ddlCity.Items.Add("Opt11"); ddlCity.Items.Add("Opt22"); } if (ddlCountry.SelectedIndex == 1 && ddlCountry.SelectedIndex == 2) { ddlCity.Items.Add("Select"); ddlCity.Items.Add("Opt111"); ddlCity.Items.Add("Opt222"); } if (ddlCountry.SelectedIndex == 2 && ddlCountry.SelectedIndex == 1) { ddlCity.Items.Add("Select"); ddlCity.Items.Add("Opt11"); ddlCity.Items.Add("Opt22"); } if (ddlCountry.SelectedIndex == 2 && ddlCountry.SelectedIndex == 2) { ddlCity.Items.Add("Select"); ddlCity.Items.Add("Opt111"); ddlCity.Items.Add("Opt222"); } } protected void ddlCity_SelectedIndexChanged(object sender, EventArgs e) { //Do the action } hope this helps.

Priyank Khare · Answer

thanx it is working..

Pradip Pandey · Answer

Check for DropDownList5 control that AutoPostBack property is True.

Priyank Khare · Answer

my DropDownList5_SelectedIndexChanged event is not working. when i am using breakpoint on it, on execution the cursor is coming on this event. now please tell what to do..

Pradip Pandey · Answer

Hi Use this to get the selected value from first DropDownList5_SelectedIndexChanged event. int adlt = int.Parse(DropDownList5.SelectedValue.ToString()); After that apply your condition. Hope it will help.