I am upgrading from the ultra web grid and with the grid I am upgrading from we iterate through all controls within a column by first iterating through the columns to get each column (I have managed to port this to the WebDataGrid just fine) and then inside of that iteration iterate through the controls. For the UltraWebGrid it was done like so:
For Each c As Control In DirectCast(ugc, Infragistics.WebUI.UltraWebGrid.TemplatedColumn).CellItems(e.Row.Index).Controls 'Action to performNext
I cannot find a control collection within the column for the WebDataGrid for me to perform a similar function. If it helps I am only handling TemplateDataFields and looking for controls within their ItemTemplate. this is being done in the InitilizeRow event for the WebDataGrid. I have tried a accessing the items in the record for said column by doing:
For Each c As Control In e.Row.Items.Record.Items(column.Index).Record.Items 'Action to performNext
Yet this returns nothing and thus causes errors. How can one iterate through the controls in an TemplateDataField's ItemTemplate
Could really do with a response to this question as it is holding up our ability to upgrade to the newer versions
Hello Guy Curtis,
Thank you for posting in our forums!
If you know the IDs of the controls in the template, you can access the controls with the FindControl method. You can see an example of this code here:
Protected Sub WebDataGrid1_InitializeRow(sender As Object, e As RowEventArgs) Handles WebDataGrid1.InitializeRow Dim lbl As Label = e.Row.Items.FindItemByKey("TemplateField_0").FindControl("Label1") lbl.Text = "Test" End Sub
If you must iterate through the template, this is a little trickier and would be considered a new product idea. There is a workaround using Reflection that you can use to get the TemplateContainer object and iterate over the Controls collection. You can do this with the following example code:
Protected Sub WebDataGrid1_InitializeRow(sender As Object, e As RowEventArgs) Handles WebDataGrid1.InitializeRow Dim row As ControlDataItem = e.Row.Items.FindItemByKey("TemplateField_0") Dim myType As Type = row.GetType() Dim myProp As PropertyInfo = myType.GetProperty("TemplateContainer", BindingFlags.NonPublic Or BindingFlags.Instance) Dim templateContainer As Infragistics.Web.UI.TemplateContainer = myProp.GetValue(row, Nothing) For Each c As Control In templateContainer.Controls 'Action to perform System.Diagnostics.Debug.WriteLine(c.ClientID) Next End Sub
After working on this workaround and doing some research, iterating over controls in a templatefield has been determined to be a new product idea. You can suggest new product ideas for future versions (or vote for existing ones) at <http://ideas.infragistics.com>.
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