GET ERROR The Controls collection cannot be modified because the control contains code blocks (i.e. ).

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SQL-Server-2012

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The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

I set the gridview on MasterPage and using JAVASCRIPT i want to do the task in which , when i click on the Row of gridview the value store into hidden flag and to what i want to do.

but the problem is when i debug the error is found

The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

i writing this code//

from javascript...

C#

var curSelRowIndex = -1;
       var curSelRow = null;
       function GridDblClick(varRowIndex) {
           debugger;
           if (curSelRow != null) {
               curSelRow.style.backgroundColor = (curSelRowIndex % 2 == 0 ? "#EBEBEB" : "activeborder");
           }
           document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex].style.backgroundColor = '#ffc0cb';
           curSelRow = document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex];
           curSelRowIndex = varRowIndex;

           document.getElementById('<%=hidMID.ClientID %>').value = 'E~' + GetInnerText(document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex].cells[1]) + '~' + GetInnerText(document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex].cells[2]) + '~' + GetInnerText(document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex].cells[3]) + '~' + GetInnerText(document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex].cells[4]) + '~' + GetInnerText(document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex].cells[5]) + '~' + GetInnerText(document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex].cells[6]) + '~' + GetInnerText(document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex].cells[7]) + '~' + GetInnerText(document.getElementById("<%=GridView1.ClientID %>").rows[varRowIndex].cells[8]);

       }

on code behind .cs

C#

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
      {
          
          if (e.Row.RowIndex > -1)
          {
              e.Row.Attributes.Add("ondblclick", "javascript:return GridDblClick(" + (e.Row.RowIndex + 1) + ")");

          }
      }

THE MAIN THING IS I AM USING THIS CODE AND PLACE THIS GRIDVIEW ON MASTERPAGE.. PLZ SUGGEST ME WHAT I HAVE TO DO FOR THIS>>>

Posted 3-Feb-14 19:20pm

Ravimcts

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Aravindba 4-Feb-14 1:45am

dont shout,remove all capital letters in ur description

2 solutions

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Member 10476757 · Answer 1 · 2014-02-03T19:30:00

Solution 1

one solution could try writing your javascript code in the body section html

Posted 3-Feb-14 19:30pm

Member 10476757

Comments

Ravimcts 4-Feb-14 1:37am

Dear, when i debug the javascript code then i found that this

var curSelRowIndex = -1;
var curSelRow = null;
function GridDblClick(varRowIndex) {
debugger;
if (curSelRow != null) {
curSelRow.style.backgroundColor = (curSelRowIndex % 2 == 0 ? "#EBEBEB" : "activeborder");
}
document.getElementById("").rows[varRowIndex].style.backgroundColor = '#ffc0cb';
curSelRow = document.getElementById("").rows[varRowIndex];
curSelRowIndex = varRowIndex;

document.getElementById('').value = 'E~' + GetInnerText(document.getElementById("").rows[varRowIndex].cells[1]) + '~' + GetInnerText(document.getElementById("").rows[varRowIndex].cells[2]) + '~' + GetInnerText(document.getElementById("").rows[varRowIndex].cells[3]) + '~' + GetInnerText(document.getElementById("").rows[varRowIndex].cells[4]) + '~' + GetInnerText(document.getElementById("").rows[varRowIndex].cells[5]) + '~' + GetInnerText(document.getElementById("").rows[varRowIndex].cells[6]) + '~' + GetInnerText(document.getElementById("").rows[varRowIndex].cells[7]) + '~' + GetInnerText(document.getElementById("").rows[varRowIndex].cells[8]);

}

means the HTML DOM part "document.getElementById("")" the control in this are not found. i try ur solution also but the same problm is there
tell me can i use the script i made on the master page also.

JoCodes · Answer 2 · 2014-02-03T20:11:00

Solution 2

Replace the code block with <%# instead of <%=

Refer

aspnet-controls-collection-cannot-be[^]

the-controls-collection-cannot-be-modified-because-the-control-contains-code-block[^]

Posted 3-Feb-14 20:11pm

JoCodes

Comments

Ravimcts 4-Feb-14 2:24am

i already go thru this solution sir. but this error is recoverd but main things is when i debug the code
document.getElementById("").rows[varRowIndex].style.backgroundColor = '#ffc0cb';

the id was not fetch by this..
what can i do now

JoCodes 4-Feb-14 2:31am

But why you are using document.getElementById("") wihout any ID referred to fetch?

Ravimcts 4-Feb-14 2:38am

then how can they identify the control. sir when i want any value from clientside then i used it and this works well also but i cant understand it may be due to Masterpage or any other problem.
plz suggest how can i identify the gridview control from client side.
i knw how to do this from server side but main issue is speed and reliability, plz tell me some more solution how can i get the value of control on client side

JoCodes 4-Feb-14 2:52am

The way you accessing is correct , I asked because i saw document.getElementById("")<- no id was passed here. Can you check this link which pass the rowID concatenated with an id and passes to the client method to access it easily
http://stackoverflow.com/questions/7819638/how-to-change-the-gridview-row-colors-in-onclick-event-in-javascript

Ravimcts 4-Feb-14 2:58am

ohh this comes when i debug the java script then i found that the id is not inside this ("").

i found problem but unable to resolve this, y this comes i make so many things wid javascript but i never used on master page i feel that i may be due to masterpage hmm/./

sir if u are getting my prblm its a humble rqst plz resolve it.
i dnt knw y r this occurs, their is no problm in code or any unwanted postbacks den y this occurs

JoCodes 4-Feb-14 3:02am

No probs, Tell me one this the JS function is in master page and the Gridview you try to access is in Contentpage?

Ravimcts 4-Feb-14 5:42am

NO..
JS function is on master page and Gridview is also at master page..
i am using gridview in footer because i want to show that grid view in all pages to show the task of employee assigned.

Ravimcts 4-Feb-14 23:35pm

thnx forit.. i have done my task.

JoCodes 5-Feb-14 0:05am

What was the issue?

Ravimcts 4-Feb-14 2:30am

How to get the value of the control by using <%#...%>

JoCodes 4-Feb-14 2:37am

Used Page.Header.DataBind(); in the masterpage pageload event?