how to fill textbox on selectedindexchanged in repeater in asp.net

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Hi guys,

I have a repeater,
where i have a dropdownlist n textbox.

onselectedindexchanged event of ddl, i want to fill the specific textbox.

may be using clientid or else....

plz suggest me;

ASP CODE:

<asp:Repeater ID="Repeater1" runat="server"
                                   onitemdatabound="Repeater1_ItemDataBound">
                                   <HeaderTemplate>
                                       <table class="table table-striped table-bordered" id="a0">
                                       <thead>
                                       <tr>
                                           <th>DoorNo#</th>
                                           <th>PlateNo#</th>
                                           <th>Status</th>
                                           <th>Driver</th>
                                           <th>Department</th>
                                           <th>Location</th>
                                       </tr>
                                   </thead>
                                       <tbody>
                                    </HeaderTemplate>
                                    <ItemTemplate>
                                           <tr class="odd gradeX">
                                               <td>
                                                   <asp:Label ID="lbldoorno" runat="server" Text='<%# Eval("DoorNo")%>'></asp:Label></td>
                                               <td><asp:Label ID="lblplateno" runat="server" Text='<%# Eval("PlateNo")%>'></asp:Label></td>
                                               <td><asp:DropDownList ID="ddlstatus" OnSelectedIndexChanged="ddldept_SelectedIndexChanged"
                                                AutoPostBack="true" Width="100px" runat="server">
                                                   <asp:ListItem Value="1"> Active </asp:ListItem>
                                                   <asp:ListItem Value="2"> InActive</asp:ListItem>
                                                   </asp:DropDownList></td>
                                               <td><asp:TextBox ID="txtdriver" runat="server" Text="a"></asp:TextBox></td>
                                               <td>
                                                   <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
                                                   <ContentTemplate>
                                                   <asp:DropDownList ID="ddldept" runat="server">
                                                   </asp:DropDownList>
                                                   </ContentTemplate>
                                                   <Triggers>
                                                   <asp:PostBackTrigger ControlID="ddldept" />
                                                   <%--<asp:PostBackTrigger ControlID="ddldept" />--%>
                                                   </Triggers>
                                                   </asp:UpdatePanel>
                                               </td>
                                               <td><asp:TextBox ID="txtlocation" Text="yard" runat="server"></asp:TextBox></td>

                                           </tr>
                                    </ItemTemplate>
                                    <FooterTemplate>
                                       <table width="100%">
                                       <tbody><tr><td align="center"><br />
                                           <asp:Button ID="btnCncl" runat="server" Text="Cancel" CssClass="btn btn-danger btn-small"  Font-Bold="True" onclick="ButtonCncl_Click"  />
                                            
                                           <asp:Button ID="btnSave" runat="server" CssClass="btn btn-success btn-small" Text="Save" Font-Bold="True" onclick="ButtonSave_Click" /></td></tr></tbody>
                                       </table>
                                    </FooterTemplate>
                                   </asp:Repeater>

my code:

protected void ddldept_SelectedIndexChanged(object sender, EventArgs e)
        {
            DropDownList d = (DropDownList)sender;
            //TextBox t = (TextBox)sender;
            
            int index = Convert.ToInt32(d.SelectedValue);

            if (index == 2)
            {
                TextBox tb = FindControl("txtdriver") as TextBox;
               tb.text ="N/a";
                TextBox tbl = FindControl("txtlocation") as TextBox;
                tbl.Textt = "Yard";
            }
            // Use d here
        }

plz help me.... ...

thanks

Posted 15-Feb-14 3:51am

abdul subhan mohammed

Updated 7-May-20 20:30pm

v3

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Comments

Krunal Rohit 15-Feb-14 10:20am

Okay, so what is the error ?

abdul subhan mohammed 15-Feb-14 10:22am

NullReferenceException,

i want to fill it by using clientid/any suggestions...

just the requirement is to fill the textbox on selected dropdownlist changed...

Krunal Rohit 15-Feb-14 10:41am

That TextBox Id is correct ?

abdul subhan mohammed 15-Feb-14 10:48am

i have a textbox in a repeater,

even i tried findcontrol("repeater1").findcontrol("txtdriver") as textbox;

but still not working...

4 solutions

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Omersayeed · Answer 1 · 2014-02-15T05:07:00

Dear Subhan,

Repeater control is used to display repeating pattern of data like grid or lists

Examples:
http://www.w3schools.com/aspnet/aspnet_repeater.asp

and

msdn.microsoft.com/en-us/magazine/cc163780.aspx

I am not sure what do you want to achieve by adding a single text box to it, I suggest creating Item templates and then bind the data to those item templates.

Hope this helps

Regards
Omer.

Krunal Rohit · Answer 2 · 2014-02-15T04:26:00

C#

protected void ddldept_SelectedIndexChanged(object sender, EventArgs e)
{
if(!IsPostBack)
    {
        DropDownList d = (DropDownList)sender;
         //TextBox t = (TextBox)sender;
                    
          int index = Convert.ToInt32(d.SelectedValue);
         
                    if (index == 2)
                    {
                        TextBox tb = FindControl("txtdriver") as TextBox;
                       tb.text ="N/a";
                        TextBox tbl = FindControl("txtlocation") as TextBox;
                        tbl.Textt = "Yard";
                    }
        }
}

JatinKhimani · Answer 3 · 2014-02-16T23:37:00

You find the Textbox wrong way which gioven error as you told
Try to Run this code its working with your current selected index in repeter's dropdown items..

protected void ddldept_SelectedIndexChanged(object sender, EventArgs e)
{
DropDownList d = (DropDownList)sender;
//TextBox t = (TextBox)sender;

int Value = Convert.ToInt32(d.SelectedValue);
int index = d.TabIndex;
if (Value == 2)
{
TextBox tb = (TextBox)Repeater1.Items[index].FindControl("txtdriver");
tb.Text = "N/a";
TextBox tbl = (TextBox)Repeater1.Items[index].FindControl("txtlocation");
tbl.Text = "Yard";
}
// Use d here
}

Member 14825535 · Answer 4 · 2020-05-07T20:31:00

Solution 4

protected void ddldept_SelectedIndexChanged(object sender, EventArgs e)
{
DropDownList d= (DropDownList)sender;
int currentItemIndex = ((RepeaterItem)d.NamingContainer).ItemIndex;
Label lbloriginalvalue =(Label)rptAgentFields.Items[currentItemIndex].FindControl("lbloriginalvalue");
string value = d.SelectedValue;
}

Posted 7-May-20 20:31pm

Member 14825535

Comments

TheRealSteveJudge 8-May-20 8:56am

The question is over 6 years old.
I hope the OP is still alive.

how to fill textbox on selectedindexchanged in repeater in asp.net

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