Problem with gridview
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Hi, In Grid view header i putted one checkbox and inside gridview also having checkbox and one button outside the grid. when i click button it's give me dgridview header checkbox check or not. but it's giving me null. this code giving me null. CheckBox chkAllDelete = (CheckBox)GridView1.HeaderRow.FindControl("chkAll"); when i m trying to find this control.i m getting null value. my code: This code in Html part var counter = 0; var pattern = '^GridView1'; // Get the checkboxes inside the Gridview which is part of the template column function GetChildCheckBoxCount() { var checkBoxCount = 0; var elements = document.getElementsByTagName("INPUT"); for(i=0; i<elements.length;i++) { if(IsCheckBox(elements[i]) && IsMatch(elements[i].id)) checkBoxCount++; } return parseInt(checkBoxCount); } // A function that checks if the checkboxes are the one inside the GridView function IsMatch(id) { var regularExpresssion = new RegExp(pattern); if(id.match(regularExpresssion)) return true; else return false; } function IsCheckBox(chk) { if(chk.type == 'checkbox') return true; else return false; } function AttachListener() { var elements = document.getElementsByTagName("INPUT"); for(i=0; i< elements.length; i++) { if( IsCheckBox(elements[i]) && IsMatch(elements[i].id)) { AddEvent(elements[i],'click',CheckChild); } } } function CheckChild(e) { var evt = e || window.event; var obj = evt.target || evt.srcElement if(obj.checked) { if(counter < GetChildCheckBoxCount()) { counter++; } } else { if(counter > 0) { counter--; } } if(counter == GetChildCheckBoxCount()) { document.getElementById("chkAll").checked = true; } else if(counter < GetChildCheckBoxCount()) { document.getElementById("chkAll").checked = false; } } function AddEvent(obj, evType, fn) { if (obj.addEventListener) { obj.addEventListener(evType, fn, true); return true; } else if (obj.attachEvent) { </x-turndown>
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Hi, In Grid view header i putted one checkbox and inside gridview also having checkbox and one button outside the grid. when i click button it's give me dgridview header checkbox check or not. but it's giving me null. this code giving me null. CheckBox chkAllDelete = (CheckBox)GridView1.HeaderRow.FindControl("chkAll"); when i m trying to find this control.i m getting null value. my code: This code in Html part var counter = 0; var pattern = '^GridView1'; // Get the checkboxes inside the Gridview which is part of the template column function GetChildCheckBoxCount() { var checkBoxCount = 0; var elements = document.getElementsByTagName("INPUT"); for(i=0; i<elements.length;i++) { if(IsCheckBox(elements[i]) && IsMatch(elements[i].id)) checkBoxCount++; } return parseInt(checkBoxCount); } // A function that checks if the checkboxes are the one inside the GridView function IsMatch(id) { var regularExpresssion = new RegExp(pattern); if(id.match(regularExpresssion)) return true; else return false; } function IsCheckBox(chk) { if(chk.type == 'checkbox') return true; else return false; } function AttachListener() { var elements = document.getElementsByTagName("INPUT"); for(i=0; i< elements.length; i++) { if( IsCheckBox(elements[i]) && IsMatch(elements[i].id)) { AddEvent(elements[i],'click',CheckChild); } } } function CheckChild(e) { var evt = e || window.event; var obj = evt.target || evt.srcElement if(obj.checked) { if(counter < GetChildCheckBoxCount()) { counter++; } } else { if(counter > 0) { counter--; } } if(counter == GetChildCheckBoxCount()) { document.getElementById("chkAll").checked = true; } else if(counter < GetChildCheckBoxCount()) { document.getElementById("chkAll").checked = false; } } function AddEvent(obj, evType, fn) { if (obj.addEventListener) { obj.addEventListener(evType, fn, true); return true; } else if (obj.attachEvent) { </x-turndown>