problem in drop down list in asp.net

Nitin Sharma

i have two dropdown list first dropdown list id is state and second list id is distic, i wanted to hide second dropdownlist and it is display only when user select any state name in first dropdownlist , and second list show the distic name according to the selected state name in first list , example i have state name like hp, punjab, delhi, up etx , and second lise have , distic name accordingly , if user select punjab than only punjab's distic name will show .
can anybody help me for this

2 Replies

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Nitin Sharma12y ago
did not understand the meaning of dsd, gdv
can u please explain the logic
0
selvi subramanian12y ago
source

--Select--

--Select--

Width="158px" onclick="Button1_Click" />

my code is

put this code in page load
string anad = "select sectionname from section order by sectionname";
dsd = gdv.GETDS(anad);
foreach (DataRow dr in dsd.Tables[0].Rows)
{
int a = 0;
ListItem li1 = new ListItem();
li1.Text = dr["sectionname"].ToString();
li1.Value = Convert.ToString(a + 1);
DropDownList1.Items.Add(li1.ToString());
}

protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e)
{
//if (!IsPostBack)
//{
DataSet ddse = new DataSet();
string and = "select sectionname from suplier where suppliername='" + DropDownList2.SelectedItem.ToString() + "'";
ddse = gdv.GETDS(and);
foreach (DataRow dr in ddse.Tables[0].Rows)
{
int a = 0;
ListItem li1 = new ListItem();
li1.Text = dr["sectionname"].ToString();
li1.Value = Convert.ToString(a + 1);
DropDownList3.Items.Add(li1.ToString());
}
// }
}

0

	--Select--		--Select--
Width="158px" onclick="Button1_Click" />