DropDownList (Country-State-District-City)

Johnbhatt
Posted by Johnbhatt under ASP.NET category on | Points: 40 | Views : 4045
How to Make a Complete Dropdown and Prevent Inserting Dummy Data from Form.

Disable other Controls when Clicked back to Parent Control:

Drop Down Sequence:

OnLoad
Load Country
On-Change
Load State according to Country
On-Change
Load Dists in State
On-Change
List Cities in Dist.


Code:

protected void ddlCountry_SelectedIndexChanged(object sender, EventArgs e)
{
ddlState.DataSource = res.States(Convert.ToInt16(ddlCountry.SelectedValue));
ddlState.DataTextField = "StateName";
ddlState.DataValueField = "StateID";
ddlState.DataBind();
ddlState.Items.Insert(0, "Select");
ddlDist.Enabled = false;
ddlCity.Enabled = false;
}
protected void ddlState_SelectedIndexChanged(object sender, EventArgs e)
{
ddlDist.DataSource = res.Districts(Convert.ToInt16(ddlState.SelectedValue));
ddlDist.DataTextField = "DistName";
ddlDist.DataValueField = "DistID";
ddlDist.DataBind();
ddlDist.Items.Insert(0, "Select");
ddlDist.Enabled = true;
ddlCity.Enabled = false;
}
protected void ddlDist_SelectedIndexChanged(object sender, EventArgs e)
{
ddlCity.DataSource = res.Cities(Convert.ToInt16(ddlDist.SelectedValue));
ddlCity.DataTextField = "CityName";
ddlCity.DataValueField = "CityID";
ddlCity.DataBind();
ddlCity.Items.Insert(0, "Select");
ddlCity.Enabled = true;
}

Comments or Responses

Posted by: Srilu.Nayini577 on: 8/20/2012 Level:Starter | Status: [Member] | Points: 10
useful post.
Posted by: Johnbhatt on: 8/20/2012 Level:Starter | Status: [Member] | Points: 10
Thanks dear..

Login to post response