How to check checkboxes in gridview with javascript

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Hoew to check checkboxes in gridview

C#

if (chidgridVal.rows.length > 0) {
                  //                         alert("hii222");
                  for (i = 0; i <= chidgridVal.rows.length; i++) {
                      alert(i + 2);

                      document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 6).toString() + '_ui_access').checked == true;
                      var chkUIACCESS = document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 2).toString() + '_ui_access').checked
                      alert(chkUIACCESS);
                      if (chkUIACCESS == true) {
                          alert("chldchk");
                      }
                      else { alert("clhdunchk"); }
                  }
              }

i havewritten below code so that chkboxes will get chked but not getting chkd
document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 6).toString() + '_ui_access').checked == true;

Posted 5-Aug-13 0:50am

Member 9410081

Updated 5-Aug-13 1:05am

Dholakiya Ankit

v4

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Ankur^\m/ · Accepted Answer · 2013-08-05T01:00:00

document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 6).toString() + '_ui_access').checked == true;

== operator is an equality operator which returns a boolean value - true if the values of its operands are equal, false otherwise.

Since you need to check the checkbox here, you need an assignment operator (=). So replace your code with

document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 6).toString() + '_ui_access').checked = true;

and it should work

For more about the operators, read the MSDN reference: C# Operators[^]