how to obtain id of corressponding selected item in drop down list

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In my application,I want a college id of selected college name. The college name is selected from drop down list. How can i get college id of corressponding selected college name.Please give me query in sql server to obtain this?
Thanks.

Posted 5-Aug-11 0:05am

Ujwala Gholap

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#realJSOP · Answer 1 · 2011-08-05T00:18:00

The best answer for this question takes more time than I have available in detail. If you need this kind of info, the stored proc you used to populate the list should already return the desired info. At that point, you merely bind the list (with the most appropriate/desired binding mechanism), and when the item is selected in the list, you can get the id from the bound object.

Sorry, I don't have time to post sample code, but since you're a programmer, the instructions above should really be enough to get you started.

arunrv · Answer 2 · 2011-08-05T00:46:00

C#

string sql = string.Format(select * from department"

DataTable tab = new DataTable();
open_con();
SqlDataAdapter adp = new SqlDataAdapter(sql, con);
adp.Fill(tab);
close_con();

Dropdepartment.DataSource = tab;
Dropdepartment.DataTextField = "Department_name";
Dropdepartment.DataValueField = "DepartmentID";
Dropdepartment.DataBind();

then in button click event u you can write
string colleageID =Dropdepartment.SelectedValue;

how to obtain id of corressponding selected item in drop down list

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