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Ahmed DajaniMember

Posted: June 20, 2012 2:07 PM

Hi,

I'm having a problem with my webgrid columns resizing after postback. I've attached a before an after image to illustrate the problem. During the loading of the page, I add the rows in the code behind. I then post back to the server for processing, and rebind the grid. Code is below:

<ISWebGrid:WebGrid ID="wbCompareResults" runat="server" Height="75%" Width="100%" UseDefaultStyle="true" EnableWebResources="Always"
                            CustomSchemaRetrieval="UseWebGrid">
            <RootTable GridLineStyle="NotSet">
                <Columns>
                    <ISWebGrid:WebGridColumn ColumnType="Custom" Width="35px" AllowSizing="No" /> 
                    <ISWebGrid:WebGridColumn ColumnType="Text" Width="35px" Name="Tran" AllowSizing="No" />
                    <ISWebGrid:WebGridColumn ColumnType="Text" Width="50px" Name="Num" AllowSizing="No" />
                    <ISWebGrid:WebGridColumn ColumnType="Text" Width="10px" AllowSizing="No" />
                    <ISWebGrid:WebGridColumn ColumnType="Text" Width="50px" Name="LT" AllowSizing="No" />
                    <ISWebGrid:WebGridColumn ColumnType="Text" Width="10px" AllowSizing="No" />
                    <ISWebGrid:WebGridColumn ColumnType="Text" Width="50px" Name="BT" AllowSizing="No" />
                    <ISWebGrid:WebGridColumn ColumnType="Text" Width="10px" AllowSizing="No" />
                    <ISWebGrid:WebGridColumn ColumnType="Text" Width="50px" Name="BC" AllowSizing="No" />
                    <ISWebGrid:WebGridColumn ColumnType="Text" Width="10px" AllowSizing="No" />
                    <%--<ISWebGrid:WebGridColumn ColumnType="Custom" IsAutoWidth="true" AllowSizing="Yes" Name="Description" Caption="Description" />
                    <ISWebGrid:WebGridColumn ColumnType="Custom" IsAutoWidth="true" AllowSizing="Yes" Name="Field" Caption="Field" />
                    <ISWebGrid:WebGridColumn ColumnType="Custom" IsAutoWidth="true" AllowSizing="Yes" Name="Value" Caption="Value" />--%>
                    <ISWebGrid:WebGridColumn ColumnType="Custom" Width="725px" AllowSizing="Yes" Name="Description" Caption="Description" />
                    <ISWebGrid:WebGridColumn ColumnType="Custom" Width="110px" AllowSizing="Yes" Name="Field" Caption="Field" />
                    <ISWebGrid:WebGridColumn ColumnType="Custom" Width="110px" AllowSizing="Yes" Name="Value" Caption="Value" />
                </Columns>
            </RootTable>
            <LayoutSettings AllowEdit="No" 
                AlternatingColors="false" 
                GridLines="Horizontal" 
                PagingMode="None"
                AutoHeight="true"
                AutoFitColumns="false"
                StatusBarVisible="false">
                <AlternatingRowStyle CustomRules="text-overflow: ellipsis; overflow: hidden;" Wrap="false" BackColor="White" Font-Size="8pt" Font-Names="Arial Monospaced"></AlternatingRowStyle>
                <RowStyle CustomRules="text-overflow: ellipsis; overflow: hidden;" Wrap="false" BackColor="White" Font-Size="8pt" Font-Names="Arial Monospaced"></RowStyle>
            </LayoutSettings>
        </ISWebGrid:WebGrid>

Code behind - this is what is execute after the post back:

''' <summary>
    ''' binds this list to the grid
    ''' </summary>
    ''' <param name="results"></param>
    ''' <remarks></remarks>
    Private Sub BindGrid(ByVal results As List(Of String()))
        ' Note (XXX): we can't bind the grid by simply setting the datasource property since this is a list of string arrays
        ' we have to iterate through the list and add each row manually
        If results IsNot Nothing Then
            For i As Integer = 0 To results.Count - 1
                Dim data As String() = results(i)
                Me.wbCompareResults.RootTable.Rows().Add(New ISNet.WebUI.WebGrid.WebGridRow(data))
            Next
        End If
    End Sub

Everything seems to bind just find, but my first row is never sized as it was.

Thanks for your help!

2 attachments

beforePostBack.png

afterPostBack.png

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Hans KristianMember

Posted: June 21, 2012 12:06 AM in response to Ahmed Dajani

Hello,

I’m sorry for the inconvenience.

This issue occurs, perhaps because of WebGrid doesn’t do resize completely after do post back.

To handle this issue, you could use wgDoResize() javascript function in OnInitialize() client side event of WebGrid.

Here’s the snippet example code, how to use wgDoResize() function:

function WebGrid1_OnInitialize(controlId)
{
	var WebGrid1 = ISGetObject(controlId);
	wgDoResize(true, true);
	return true;
}

Then please ensure that you are using our latest hotfix version for WebGrid and the framework.

If the issue still occur, could you tell me the step by step how to reproduce this issue?

Or if you don’t mind, could you please send me a simple project that replicate this issue?

So that I can investigate this issue further.

Hope this helps. Thank you.

Regards,

Hans.

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Ahmed DajaniMember

Posted: June 21, 2012 12:54 PM in response to Hans Kristian

Thanks Hans, but this doesn't solve the problem.

I downloaded the latest hotfixes and updates but that hasn't worked either.

To recreate:

1. Create a grid with the same columsn I've created above.

2. On initial page load, you can create a List(of String()) of some values i.e.

dim rowData1 as String() = {"", "1", "1", "(", "1", ",", "1", ",", "1", ")", "1", "", "")
dim rowData2 as String() = {"", "2", "2", "(", "2", ",", "2", ",", "2", ")", "2", "", "")
dim myList as new List(of String())
myList.add(rowData1);
myList.add(rowData2);

dim newRow as New WebGridRow(myList);
myGrid.RootTable.Rows().add(newRow);

Add as many of these as you want. Save this list in the session somewhere too.

3. Add a button on the screen that will create a post back. For that buttons handler, retreive the data from session, iterate through the list and add the rows again i.e.

''' <summary>
    ''' binds this list to the grid
    ''' </summary>
    ''' <param name="results"></param>
    ''' <remarks></remarks>
    Private Sub BindGrid(ByVal results As List(Of String()))
        ' Note (XXX): we can't bind the grid by simply setting the datasource property since this is a list of string arrays
        ' we have to iterate through the list and add each row manually
        If results IsNot Nothing Then
            For i As Integer = 0 To results.Count - 1
                Dim data As String() = results(i)
                Me.wbCompareResults.RootTable.Rows().Add(New ISNet.WebUI.WebGrid.WebGridRow(data))
            Next
        End If
    End Sub

Below is the RowInitialize handler for the grid. I am inserting a checkbox for the first column:

Private Sub wbCompareResults_InitializeRow(sender As Object, e As ISNet.WebUI.WebGrid.RowEventArgs) Handles wbCompareResults.InitializeRow
        If e.Row.Type = ISNet.WebUI.WebGrid.RowType.Record Then
                ' add the checbox control 
                ' I had some other code here for the checkbox, but this should be sufficient.
                e.Row.Cells(0).Text = "<input type=""checkbox""/>"
        End If
    End Sub

I also added the client side OnInitialize function you provided.

Looking forward to your response.

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Hans KristianMember

Posted: June 21, 2012 11:50 PM in response to Ahmed Dajani

Hello,

Thank you for information code that you have given to me.

I made a simple project based on your code. I add WebButton to do PostBack event.

And I can replicate your issue on my end as well (after PostBack event).

To resolve this issue, you should add Name property in your first column (CheckBox Column)

I enclosed the snippet code that you should modify:...

<Columns>
	<ISWebGrid:WebGridColumn ColumnType="Custom" Width="35px" AllowSizing="No"/>
	<ISWebGrid:WebGridColumn ColumnType="Text" Width="35px" Name="Tran" AllowSizing="No" />
	<ISWebGrid:WebGridColumn ColumnType="Text" Width="50px" Name="Num" AllowSizing="No" />
	...
</Columns>
...
Modify to:
...
<Columns>
	<ISWebGrid:WebGridColumn ColumnType="Custom" Width="35px" AllowSizing="No" Name="CheckBoxColumn" />
	<ISWebGrid:WebGridColumn ColumnType="Text" Width="35px" Name="Tran" AllowSizing="No" />
	<ISWebGrid:WebGridColumn ColumnType="Text" Width="50px" Name="Num" AllowSizing="No" />
	...
</Columns>
...

I also attached my sample.

Hope this helps. Thank you.

Regards,

Hans.

1 attachment

WebGrid_ResizeAfterPostBack.rar

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