Intersoft Community - WebGrid Enterprise - ChildRowEmptyAction

ChildRowEmptyAction

jimmyps — Tue, 18 Aug 2009 05:57:39 GMT

Hi Siva,
Yes, you can set ChildNotExpandable property to true. This property is available in WebGridRow class.

You can set the property in WebGrid1_InitializeRow event, which is shown in the following example.
protected void WebGrid1_InitializeRow(object sender, ISNet.WebUI.WebGrid.RowEventArgs e)
    {
        if (e.Row.GetChildTableRows(e.Row.Table.ChildTables[0]).Count == 0)
            e.Row.ChildNotExpandable = true;
    }

Adding to Gordon's reply, the reason why we don't automate this process is for performance reason. The checking for each child table row could be expensive and developers often used different way to measure the child rows availability.

The above example will work if you're not using "hierarchical load on demand" feature, and it also assumes you're using strongly dataset which prefill the child rows, which may not be the case in some enterprise scenarios.

Thus, a better solution is to let customers decide their own way to measure the child rows availability, and set the property when necessary.

For instance, if you're using custom business object or LINQ query, you may use your own function such as:

if (!MyDAL.HasOrder(e.Row.KeyValue))
{
      e.Row.ChildNotExpandable = true;
}

Regards,
Jimmy.

ChildRowEmptyAction

gordont — Tue, 18 Aug 2009 04:04:50 GMT

Hi Siva,

Yes, you can set ChildNotExpandable property to true. This property is available in WebGridRow class.

You can set the property in WebGrid1_InitializeRow event, which is shown in the following example.

protected void WebGrid1_InitializeRow(object sender, ISNet.WebUI.WebGrid.RowEventArgs e)
    {
        if (e.Row.GetChildTableRows(e.Row.Table.ChildTables[0]).Count == 0)
            e.Row.ChildNotExpandable = true;
    }

Hope this helps.

Best Regards,

Gordon Tumewu

ChildRowEmptyAction

sivambe — Tue, 18 Aug 2009 01:39:54 GMT

I have made set the ChildRowEmptyAction property value "HideChildContent", it loads the grid with all the rows '+' sign. If a row does not have a child row also it loads with '+' sign, Only on clicking that row the '+' sign disappears. can anyone tell how to make the '+' sign disappear during load of that row itself?