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[Solved] Grid Performance /Localization Issue

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Grid

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7 Answers, 1 is accepted

answered on 27 May 2009, 07:06 AM

Hello Team,

Thanks for our response. Appreciate the same.

We have used localizing for declarative columns but the issue is that RadGrid_ItemCreated event is invoked every time while creating headers and while binding / populating data as well. This implies that if we have 50,000 records then ItemCreated event will be invoked 50,000 times even if a IF condition is put in for validating if item being created is a header item or not. Same as explained in the example:

protected void RadGrid2_ItemCreated(object sender, GridItemEventArgs e)
{
       if (e.Item is GridHeaderItem)
       {
          GridHeaderItem headerItem = e.Item as GridHeaderItem;

          LinkButton button = headerItem["ContactName"].Controls[0] as LinkButton;
          button.Text = "My customized contact name";

          button = headerItem["ContactTitle"].Controls[0] as LinkButton;
          button.Text = "My customized contact title";

          button = headerItem["Address"].Controls[0] as LinkButton;
          button.Text = "My customized address";
       }
}

Please refer the if statement in bold, even if this statement is also used then also this event will be invoked number of times equal to the number of rows.

This is causing performance issues at our end. Even if we think of implementing Load on demand and grid will load limited number of records but again "ItemCreated" will be executed for each data row causing performance bottleneck.

Per our understanding, there should be a separate event to created grid headers so that data rows and columns should not have any impact over the same.

Just for your information, we have implemented RADControls for the very first time in one of our critical and huge project as we were little apprehensive about effectiveness, coding effort and performance with RAD Controls. We are right now in first phase of development and if are unable to resolve these issue then we might need to go for someother 3rd party controls for implementation which will be huge loss for both of us.

Request you to please look into this ASAP to have an early solution.

Regards,
Taran Dhingra
+1 916 8308751
+91 9811067353

Accepted

answered on 27 May 2009, 12:56 PM

Hello Taran,

You can try setting the customizing the HeaderButton text in the PreRender event as shown below:

c#:

                     protected void RadGrid1_PreRender(object sender, EventArgs e)         
                {         
                    GridHeaderItem headerItem = (GridHeaderItem)RadGrid1.MasterTableView.GetItems(GridItemType.Header)[0];         
                    LinkButton button = headerItem["ContactName"].Controls[0] as LinkButton;         
                    button.Text = "My customized contact name";         
                }         

Thanks

Shinu.

answered on 29 Jun 2009, 08:09 AM

HI,

We are facing one more issue with mentioned implementation.

aftre clicking on any pager item in grid; grid column header text is getting lost when we are dynamically assigning column header values on grid prerender event but it is working fine when we are doing same thing on grid item created event.

So, my query is how we can dynamically populate grid header without using grid item created event. But it should work with paging also.

below is the code that we are using for dynamic column header.

protected

void RadGrid_PreRender(object sender, EventArgs e)

{

RadGrid _rgGrid = sender as RadGrid;

if (_rgGrid != null)

{

if (_rgGrid.MasterTableView.GetItems(GridItemType.Header) != null && _rgGrid.MasterTableView.GetItems(GridItemType.Header).Length > 0)

{

GridHeaderItem headerItem = _rgGrid.MasterTableView.GetItems(GridItemType.Header)[0] as GridHeaderItem;

if (_rgGrid.MasterTableView.GetItems(GridItemType.Header).Length > 0)

{

if (headerItem != null)

{

((

LinkButton)headerItem["Number1"].Controls[0]).Text = "Number1";

((

LinkButton)headerItem["Number2"].Controls[0]).Text = "Number2";

}

}

Thanks