dropdown list problem

Priyank Khare

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.

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.

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Abhimanyu K Vatsa14y ago
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.
0
Priyank Khare14y ago
thanx it is working..
0
Pradip Pandey14y ago
Check for DropDownList5 control that AutoPostBack property is True.
0
Priyank Khare14y ago
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..
0
Pradip Pandey14y ago
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.
0