How to get Client id of server control placed in gridview row

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Hi
I am creating row in gridview dynamicaly, having problem in geting clientid of server control (textbox) to use in javascript.

have a look at the code to understand prblem.

error : The name 'txt_date' does not exist in the current context

in line :

ASP.NET

document.getElementById('<%= txt_date.ClientID %>'),'mm/dd/yyyy',this

                       <asp:TemplateField HeaderText="Date">
                                    <ItemTemplate>
                                        <div style="float:left;">
                                            <asp:TextBox ID="txt_date" runat="server"  CssClass="textbox"></asp:TextBox>
                                            <img alt="Calender" id="img" height="16" src="images/calender.jpg" width="16" 
                                          oncick="displayCalendar( document.getElementById('<%= txt_date.ClientID %>'),'mm/dd/yyyy',this);" />
                                          </div>
                                       <div style="float:left; margin:4px;">
                                        </div>
                                        <div style="float:left;">
                                            <asp:CustomValidator ID="CustomValidator2" runat="server" 
                                                ErrorMessage="* Invalid Date" OnServerValidate="custDate_ServerValidate"></asp:CustomValidator>
                                        </div>
                                    </ItemTemplate>
                                    <ItemStyle Width="25%" />
                                </asp:TemplateField>

Posted 8-Sep-11 4:11am

Zain Ul Abedin

Updated 8-Sep-11 23:48pm

Uday P.Singh

v5

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Pravin Patil, Mumbai · Answer 1 · 2011-09-09T00:13:00

Use this function :

C#

function GetClientId(strid)
{
     var count=document.getElementsByTagName ('*').length; //<-- gets all elements, instead of Forms as this only returns FORM elements
     var i=0;
     var eleName;
     for (i=0; i < count; i++ )
     {
       eleName=document.getElementsByTagName ('*')[i].id;
       pos=eleName.indexOf(strid);
       if(pos>=0)  break;
     }
    return eleName;
}

Pass txt_date as input to it, you will get the clientId for the same. You can keep the Breakpoint on the last line of this function and evaluate eleName.

Sometimes, it becomes very troublesome to find the client ID for the server side controls, especially for user controls, data grid elements. In such scenarios you can deploy this function to find the client ID for the server control in question. Just the Server Side Name of the control and you will get the client ID for the same.

Hope this helps.
All the best.

Syed Salman Raza Zaidi · Answer 2 · 2011-09-09T00:44:00

Solution 3

In JS you can get the server control like

document.getElementById('<%=txt_date.ClientID%>')

Posted 9-Sep-11 0:44am

Syed Salman Raza Zaidi

thami36 · Answer 3 · 2011-09-08T04:36:00

Solution 1

hy
look at this
http://sanjaysainitech.blogspot.com/2008/07/get-find-functions-in-javascript.html[^]

Posted 8-Sep-11 4:36am

thami36