Hi Svetla,

                    I was able to perform 1 and 3 answers clean based upon your solution.

About 2:

                 In UltraWebGrid legacy library , we were able to set a check box Checked or UnChecked  by setting the below property(value) with true/false in server side and then display grid to user. Then user clicks a button which performs a post back updating the database(based on the data shown in the grid) and then refreshing the datasource. However as per your response,  i see it is not possible to do that in webdatagrid at server side, other than to modify the datasource value directly?

grdDataTable.Rows(rowIndex).Cells(columnIndex).Value = value
            

Is there a way to achieve this(Check/UnCheck of a CheckBox) by using Client Side JS events?(What i meant is a JS logic similar to the below which goes in some Client Side event which mimics the earlier functionality from ultrawebgrid for grdDataTable.Rows(rowIndex).Cells(columnIndex).Value =...)

var cell = eventArgs.getCell();
var rowIndex = cell.get_row().get_index();
var colIndex = cell.get_column().get_index();

if (rowIndex == 3 && colIndex == 2) 
{
   //Logic-> If there is a checkbox in this cell , Check the Check box in this cell 
}

if(rowIndex == 2 && colIndex == 1)

{

   // Logic-> If there is a checkbox in this cell ,  UnCheck the Check box in this cell 

}

Thanks,

Aravind

Hello Aravind,

You can change the state of the checkbox using client side code - _setCheckState using 1 - checked and 0 - unchecked as parameter.

var grid = ig_controls["WebDataGrid1"];
var cell = grid.get_rows().get_row(row_index).get_cellByColumnKey("Checkbox");
var newCheckState = cell._getCheckState() === 1 ? 0 : 1;
cell._setCheckState(newCheckState);

Let me know if you have any questions with this matter.

Svetla Boykova

Svetla,

             Which client side event method will this go into which mimic the ultrawebgrid server side logic for checkboxes-> grdDataTable.Rows(rowIndex).Cells(columnIndex).Value = true/false?

          I am guessing it should go into some initialize events client side methods. If not can they be achieved on "EditingClientEvents.CellValueChanging"/"CellEditingClientEvents.EnteringEditMode" ?

Thanks,

Aravind

Hi Alan,

                Our app is running in an architecture where in a wrapper control(.ascx) does all the WebDataGrid functionalities which is then leveraged by other user controls(.ascx). The wrapper and all other calling functionalities where designed around the old ultrawebgrid way of setting and retrieving objects.

Eg: DataBind was done on a wrapper method  which was called from the page load of various module & setCellValue was called on certain button click events for edit features.

So based on your suggestion, if we need to change the datasource dynamically for checkbox values and then databind, it is more effort for migration considering the way our legacy app is designed using ultrawebgrid wrapper methods.

I was able to achieve the functionality of setCellValue wrapper method for checkbox scenarios using the suggestion of using client side javascripts . I dynamically created the below JavaScript method in server side logic and registered it into Client Side using Page.ClientScript.RegisterStartupScript and mapped it to the Initialize client side event. Not the straight forward way , but it is achieving what i was looking for.

function EditGrid_ctlDataTable_grdDataTable_Initialize_CheckBoxValueChange(grid, eventArgs) {
var checkState;
var cell;

cell = grid.get_rows().get_row(8).get_cell(4);
checkState = cell._getCheckState();
if(checkState == 1 || checkState == 0)
{
cell._setCheckState(0);
}

cell = grid.get_rows().get_row(10).get_cell(4);
checkState = cell._getCheckState();
if(checkState == 1 || checkState == 0)
{
cell._setCheckState(0);
}

cell = grid.get_rows().get_row(11).get_cell(4);
checkState = cell._getCheckState();
if(checkState == 1 || checkState == 0)
{
cell._setCheckState(0);
}
}

Hello Aravind,

I am glad that you manage to achieve the desired functionality.

Let me know if you have any questions with this matter.

Svetla Boykova