how to assign Dropdownlist item from database

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Hi,
I have to enable certain buttons and textboxes on selecting a dropdownlist item.
I fetch the drop down list items from database through a query.
How a If loop will work in this case if i have to select an item from dropdownlist ??
Kindly help
thanks

Posted 27-Nov-12 0:35am

Ash29

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2 solutions

Solution 1

C#

private void Fillddl()
    {
        DataTable dtNames = new DataTable();
        dtNames = GetNames();
        if (dtNames != null)
        {
            ddlid.DataSource = dtNames ;
            ddlid.DataTextField = "NAME";
            ddlid.DataValueField = "ROLL_NO";
            ddlid.DataBind();
        }
        ddlid.Items.Insert(0, "Select");
        ddlid.Items[0].Value = "-1";
    }

In GetNames()
Get datatable with two columns NAME and ROLL_NO
Using any of database query
IF it returns

VB

NAME      ROLL_NO
-----------------
Manoj     456456
Roshan    789456

Ur Drop down will contain

Select
Manoj
roshan

with value respective roll number

Posted 27-Nov-12 1:51am

ManojDhobale

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avjabalpur · Accepted Answer · 2012-11-27T03:51:00

Use this code

DataTable datatable = logic.GetID();
if (datatable != null)
{
if (datatable.Rows.Count > 0)
{
ddlTeacherID.DataSource = datatable;
ddlTeacherID.DataValueField = datatable.Columns[0].ToString();
ddlTeacherID.DataTextField = datatable.Columns[0].ToString();
ddlTeacherID.DataBind();

}
}

Hare GetID() method contains your query