I Want To Show Userid When I Select A Username From Dropdownlist

Question

3.00/5 (1 vote)

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I have a ddl

ASP.NET

<asp:DropDownList ID="ddlSUser" runat="server" CssClass="input" Width="145px"></asp:DropDownList>

and Add Button Code

C#

protected void btnAddb_Click(object sender, EventArgs e)
        {
            Form_Enable();
            using (SqlConnection conn = new SqlConnection(conStr))
            {   // Creating insert statement
                string sql = string.Format(@"SELECT UID, UFName FROM UserInfo");
                SqlCommand cmd = new SqlCommand();
                cmd.Connection = conn;
                cmd.CommandText = sql;
                cmd.CommandType = CommandType.Text;
                conn.Open();
                ddlSUser.DataSource = cmd.ExecuteReader();
                ddlSUser.DataTextField = "UFName";
                ddlSUser.DataValueField="UID";
                ddlSUser.DataBind();                 
                conn.Close();
                cmd = null;
            }
            ddlSUser.Items.Insert(0, new ListItem("--- Select User --", "0"));
            BUID.Text = ddlSUser.DataValueField;            
        }

i want to show UID in the textbox

ASP.NET

<td><asp:TextBox ID="BUID" runat="server" CssClass="input"></asp:TextBox></td>

Need your help

Posted 11-Aug-15 21:34pm

Altaful Haq

Updated 11-Aug-15 21:35pm

v2

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Arasappan · Accepted Answer · 2015-08-11T22:02:00

<asp:dropdownlist id="ddlSUser" runat="server" cssclass="input" width="145px" onselectedindexchanged="ddlSUser_SelectedIndexChanged" autopostback="True" >

C#

protected void ddlSUser_SelectedIndexChanged(object sender, EventArgs e)
{
   BUID.Text = ddlUser.SelectedValue;
//or
BUID.Text = ddlUser.SelectedItem.Value;
//or
BUID.Text = int.Parse(ddlUser.SelectedItem.(Value or Text));
}

DamithSL · Accepted Answer · 2015-08-11T21:56:00

in your designer view of asp.net page, select your dropdown list and doubleclick to add selected index changed event, or press F4 while you selecting control and go to events and add the on selected index changed event. inside that event you can write code to set text box text from selected dropdownlist item value. make sure you have added AutoPostBack="True" property as below to execute event.

ASP.NET

<asp:DropDownList ID="ddlSUser" runat="server" CssClass="input" Width="145px" AutoPostBack="True" onselectedindexchanged="itemSelected">
    </asp:DropDownList>

Praneet Nadkar · Accepted Answer · 2015-08-11T21:45:00

Hi Altaful,

The SelectedIndexChanged events of DropDownLists can be used here. I have tried modifying your code.

Please see the below code:

ASP.NET

<asp:dropdownlist id="ddlSUser" runat="server" cssclass="input" width="145px" onselectedindexchanged="ddlSUser_SelectedIndexChanged" xmlns:asp="#unknown"></asp:dropdownlist>

And in the code behind write the event like this:

C#

protected void ddlSUser_SelectedIndexChanged(object sender, EventArgs e)
{
   BUID.Text = Convert.ToString(ddlSUser.SelectedValue);
}

I hope this helps :)

I Want To Show Userid When I Select A Username From Dropdownlist

3 solutions

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