Intersoft Community - Data

Webgrid databinding causing blank screen

zeeshaamir13 — Tue, 16 Feb 2016 20:14:29 GMT

Hey,

I have a page where there is only 1 webgrid. When the page loads I get a blank white screen. This only happens sometimes, but when it happens the logs show the following exception:

DATETIME: (hidden)

USERNAME: (hidden)

CLIENTID: (hidden)

TARGETNAME: APPLICATION_ERROR: ProcessRequest

METHODNAME: Application_Error

MESSAGE: Exception of type 'System.Web.HttpUnhandledException' was thrown.Object reference not set to an instance of an object.

STACKTRACE FROM PARENT: at System.Web.UI.Page.HandleError(Exception e)

at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

at System.Web.UI.Page.ProcessRequest()

at System.Web.UI.Page.ProcessRequest(HttpContext context)

at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()

at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

at ?. ?. ?(WebGridTable ? )

at ?. ?.? (DataView , String ? , String )

at ISNet.WebUI.WebGrid.WebGrid.DataBind()

at ISNet.WebUI.WebGrid.WebGrid.OnInitializeDataSource(Object dataSource)

at ISNet.WebUI.WebGrid.WebGrid.OnLoad(EventArgs e)

at System.Web.UI.Control.LoadRecursive()

at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

STACKTRACE: at tfSW.processcontrol.LogError(String Message, String Stacktrace, String Target, String Method, String clientid)

SOURCE: tfSW

INNER STACKTRACE:

I checked the data to make sure there might be something there but that looks fine. The weird thing is I only get this error sometimes. Any help would be greatly appreciated. Thanks.

slow performance for WebGrid export data

zeeshaamir13 — Thu, 11 Feb 2016 20:08:42 GMT

Hi,

I am using WebGrid to display records from the database. I use paging which helps loading data a lot faster. When I do export from the grid onto an excel file, it takes a lot of time, around 4-5 minutes even when there are only 10 records. Has anyone else encountered this problem ? If yes then how should I resolve this ?

Thanks.

Zeeshan

Data Presenter Manager Columns - Binding Complex Types

NeRane — Wed, 20 Feb 2013 16:03:02 GMT

Hello,

I am having problems when binding complex types to the Data Presenter Manager. I have been able to explicitely define text columns with no issue. Below is a sample of my XAML

In this example, the overlying context is a collection of Journals.

Each Journal has a complex type, JournalType, that has the string property Description.

However when running, it shows the data is there yet does not properly display the Description. Is there a "DisplayMemberPath" (UXComboBox) like property that I should be utilizing?

    <Intersoft:DataPresenterTextColumn Caption="Type" DataMemberField="JournalType">
                        <Intersoft:DataPresenterTextColumn.CellTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding Description}" />
                            </DataTemplate>
                        </Intersoft:DataPresenterTextColumn.CellTemplate>
    </Intersoft:DataPresenterTextColumn>

Regards,

Kat