Guys,

Im having issues with binding a GridView and FormView to a single LLBGen data source control. The form view contains a Name property as a simple text box control and a user control. The user control is simple and just contains a text box and embedded list box.

I have an entity CodeTechnology which contains a collection of CodeTechnologyFileExtension objects. The FormView should be to the properties of a single CodeTechnology object. I can bind the Name property easily using ASPX such as

<asp:TextBox ID="NameTextBox" runat="server" Text='<%# Bind("Name") %>' Columns="50"/>

However I can't get the binding working from the codeTechnology.CodeTechnologyFileExtension property so it binds the embedded list box in the user control to the values of each property in the CodeTechnologyFileExtensionCollection object.

The control is declared list this

<uc1:TransferTextToList ID="transferFileExtensionsToList" SourceTextBoxCaption="" runat="server" />

I have also created properties such as TargetListDataSource on the UserControl which simply wrap the DataSource on the embedded list box however I'm not sure how to use it in the calling page ASPX or code behind.

I can bind from the control to the data source i.e. when creating new records in the form view however I can't do it the other way around to load the data into the control. i.e. the PerformWork event handler on the data source has code

            codeTechnology = uowElement[0].Entity as CodeTechnologyEntity;

            // Obtain a list of file extensions in the target list
            Controls_TransferTextBoxToListBoxControl transferFileExtensionsToList = CodeTechnologyFormView.Row.FindControl("transferFileExtensionsToList") as Controls_TransferTextBoxToListBoxControl;
            ListItemCollection targetListFileExtensions = transferFileExtensionsToList.TargetListItems;

            // Add each file extension to the CodeTechnologyEntity object
            foreach (ListItem fileExtensionListItem in targetListFileExtensions)
            {
                CodeTechnologyFileExtensionEntity fileExtension = new CodeTechnologyFileExtensionEntity();
                fileExtension.FileExtension = fileExtensionListItem.Value;

                codeTechnology.CodeTechnologyFileExtension.Add(fileExtension);
            }
            
            codeTechnology.Save(true);

which simply uses the TargetListItems property to extract each embedded list box item from the user control and adds to the right LLBLGen entity property and calls Save.

Any help appreciated

Would you please post the code in the PerformSelect event?

Sure

protected void llbGenCodeTechnologiesDataSource_PerformSelect(object sender, SD.LLBLGen.Pro.ORMSupportClasses.PerformSelectEventArgs e)
    {
        CodeTechnologyCollection codeTechnologies = new CodeTechnologyCollection();
        codeTechnologies.GetMulti(null);

        llbGenCodeTechnologiesDataSource.EntityCollection = codeTechnologies;
    }

Btw why doesn't the forum support attachments, this would be a great way to submit code samples if required.

MattAdamson wrote:

Btw why doesn't the forum support attachments, this would be a great way to submit code samples if required.

It is enabled, click on the paperclip with the [+] in the header of your post. I think though why you didn't see that, the user role didn't have the right to add an attachment in a couple of forums, like this one

Thanks, attachment with code posted, look forward to a response.

Any ideas? Do you need any further information?

I've just saw your code, and you never set TargetListDataSource to a value... did I miss something ?

I also thought that would be the issue. I think you need this: (haven't tested this) <uc1:TransferTextToList ID="transferFileExtensionsToList" SourceTextBoxCaption="" runat="server" DataSource='<%# Bind("CodeTechnologyFileExtension ") #%>' />

That's it thanks without the empty space at the end Bind call though.