Dropdown problem with common values

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Hi I've a dropdown list with datasource like
empname dept
-----------------
Rahul 02
martin 01
sachin 02

i've binded this table to my dropdown list and when i try to access dept in dropdown selected event change everytime I'm gettin Rahul only. even i selected sachin.

Whats the problem? What I assume is I've two common values in my datavalue field (02 and 02) is this a problem?

Thank you
Suresh

Posted 3-Jul-13 0:51am

Suri Rayal

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Raja Soosai 3-Jul-13 7:21am

Show your code pls

4 solutions

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Vishal Pand3y · Answer 1 · 2013-07-03T01:30:00

Without analysing your code it is almost impossible to solve your problem as we can't read your mind
but to bind a drop down you need

C#

DataSource,DataTextField,DataValueField
something like 
        ddlABC.Items.Add(new ListItem("--Please Select--", "0"));
        ddlABC.DataSource = <a list="" or="" datasource="">;
        ddlABC.DataTextField = "SomeName";
        ddlABC.DataValueField = "SomeID";
        ddlABC.DataBind();

Pradeepkumar patil sonu · Answer 2 · 2013-07-03T01:36:00

Solution 2

ddl.Datasource=yourtablename(datatable);
ddl.DataTextField="tablecolumn name";
ddl.DataBind();

Posted 3-Jul-13 1:36am

Pradeepkumar patil sonu

_Amy · Answer 3 · 2013-07-03T01:41:00

Solution 3

This means that on each postback your dropdown is getting rebinded. Bind your DropDownList in Not IsPostBack block of your Page_Load event. Try like this:

C#

if(!IsPostBack){
    DropDownList1.DataSource = YourDataSource;
    DropDownList1.DataTextField = "EmpName";
    DropDownList1.DataValueField = "Dept";
    DropDownList1.DataBind();
}

--Amit

Posted 3-Jul-13 1:41am

_Amy

Comments

Suri Rayal 3-Jul-13 8:50am

I did bind drop down list within if(!IsPostBack){} only,

_Amy 3-Jul-13 23:05pm

Then somewhere you are rebinding the dropdown.. Can I see your code? Is it a user control?

Suri Rayal · Answer 4 · 2013-07-03T02:56:00

Hi I've a dropdown list with datasource like
empname dept
-----------------
Rahul 02
martin 01
sachin 02

i've binded this table to my dropdown list and when i try to access dept in dropdown selected event change every time I'm getting Rahul only. even i selected sachin.

Whats the problem? What I assume is I've two common values in my datavalue field (02 and 02) is this a problem?

Please check my code shown below..

SQL

if (!IsPostBack)
       {
 try
            {
                con.Open();
                SqlCommand cmd = new SqlCommand("toget_emp", con);
                cmd.CommandType = CommandType.StoredProcedure;
                SqlDataAdapter da = new SqlDataAdapter(cmd);
                DataSet ds = new DataSet();
                da.Fill(ds);
                if (ds.Tables[0].Rows.Count > 0)
                {
                    ddlReason.DataSource = ds.Tables[0];
                    ddlReason.DataTextField = "empname";
                    ddlReason.DataValueField = "dept";
                    ddlReason.DataBind();
                    ddlReason.Items.Insert(0, "--Select--");
                }
            }
            catch (SqlException ex)
            {
                ScriptManager.RegisterStartupScript(this, GetType(), "alert", "javascript:alert('" + ex.Message + "')", true);
            }
            finally
            {
                con.Close();
            }
        }

Dropdown problem with common values

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