asked on

System.Windows.Markup.XamlParseException:

Hi

Ive created a silverlight navigation project and it consists of a web project with my svc file with its C# code etc and i have contained my silverlight page within my master page content, but when im running my app i get the error System.Windows.Markup.XamlParseException: Failed to assign to property 'System.Windows.Controls.Primitives.ButtonBase.Click'

this is the code it fails at...

namespace SLERPConn
{
public partial class Home : Page
{
public Home()
{
InitializeComponent(); FAILS AT THIS LINE

Service1Client client = new Service1Client();
client.SalesListCompleted += new EventHandler<SalesListCompletedEventArgs>(sapData_Click);
client.SalesListAsync();
}

private void sapData_Click(object sender, SalesListCompletedEventArgs e) {
sapGrid.ItemsSource = e.Result;
}
}
}

Im basically trying to populate a grid from a button event.

Gautham Janardhan

can you post ur xaml please..

razza_b

ASKER

sure...

<navigation:Page x:Class="SLERPConn.Home"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:navigation="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation"
mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480"
Title="Home"
Style="{StaticResource PageStyle}" xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk">

<Grid x:Name="LayoutRoot">
<ScrollViewer x:Name="PageScrollViewer" Style="{StaticResource PageScrollViewerStyle}">

<StackPanel x:Name="ContentStackPanel">

<TextBlock x:Name="HeaderText" Style="{StaticResource HeaderTextStyle}"
Text="Home"/>
<TextBlock x:Name="ContentText" Style="{StaticResource ContentTextStyle}"
Text="Home page content"/>
<Button Content="SAP Data" Height="23" Name="button1" Width="75" Click="sapData_Click" />
<sdk:DataGrid AutoGenerateColumns="False" Height="86" Name="sapGrid" Width="565" />
</StackPanel>

</ScrollViewer>
</Grid>

</navigation:Page>

ASKER CERTIFIED SOLUTION

Gautham Janardhan

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

Gautham Janardhan

the signature for the click event and the completed event are different , you can use the same method for both

razza_b

ASKER

Ok, that helped thanks, but for some reason when the button clicked it doesnt populate my grid ant ideas?

Gautham Janardhan

the click method doesnt have any implementation, Not sure what the button is though, From my understanding the grid should get populated on the call back from the service

razza_b

ASKER

I was going to use it to click and populate it(obviously no code in it to do that so ill remove it) but yeah the service should just populate it.

i added this in to see if anything happens but nothing does happen. Do you know why it wont populate?

private void sapData_Completed(object sender, SalesListCompletedEventArgs e)
{
try
{
sapGrid.ItemsSource = e.Result;
}
catch
{
HtmlPage.Window.Alert("NO DATA!");
}
}

razza_b

ASKER

this is my other code involved...

namespace SLERPConn.Web
{
[ServiceContract(Namespace = "")]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class Service1
{
[OperationContract]
public List<SalesOrder> SalesList()
{
string Cnn = System.Configuration.ConfigurationManager.ConnectionStrings["WTCn"].ConnectionString;
var sales = new List<SalesOrder>();
using (SqlConnection conn = new SqlConnection(Cnn))
{
const string sql = @"SELECT TOP 10 salesorder, partnumber, qty FROM wp4tbl_TblSAPSilverlightTest";
conn.Open();
using (SqlCommand cmd = new SqlCommand(sql, conn))
{
SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
if (dr != null)
while (dr.Read())
{
var data = new SalesOrder
{
salesorder = dr.GetString(0),
partnumber = dr.GetString(1),
qty = Convert.ToString(dr.GetInt32(2))
};
sales.Add(data);
}
return sales;
}
}
}
}
}

namespace SLERPConn.Web.Classes
{
public class SalesOrder
{
public string salesorder { get; set; }
public string partnumber { get; set; }
public string qty { get; set; }
}
}

razza_b

ASKER

when im debugging the service it has the data to pull back for the grid, but when going through this code

public Home()
{
InitializeComponent();

Service1Client client = new Service1Client();
client.SalesListCompleted += new EventHandler<SalesListCompletedEventArgs>(sapData_Completed);
client.SalesListAsync();
}

private void sapData_Completed(object sender, SalesListCompletedEventArgs e)
{
try
{
sapGrid.ItemsSource = e.Result;
}
catch
{
HtmlPage.Window.Alert("NO DATA!");
}
}
}

it gets to sapData_Completed method then goes into main page xaml cs...

public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}

// After the Frame navigates, ensure the HyperlinkButton representing the current page is selected
private void ContentFrame_Navigated(object sender, NavigationEventArgs e)
{
foreach (UIElement child in LinksStackPanel.Children)
{
HyperlinkButton hb = child as HyperlinkButton;
if (hb != null && hb.NavigateUri != null)
{
if (hb.NavigateUri.ToString().Equals(e.Uri.ToString()))
{
VisualStateManager.GoToState(hb, "ActiveLink", true);
}
else
{
VisualStateManager.GoToState(hb, "InactiveLink", true);
}
}
}
}

// If an error occurs during navigation, show an error window
private void ContentFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
{
e.Handled = true;
ChildWindow errorWin = new ErrorWindow(e.Uri);
errorWin.Show();
}
}

then nothing appears.

Gautham Janardhan

what is sapGrid ? also can you make sure that e.Result has value in it

razza_b

ASKER

thats the name of my grid.

razza_b

ASKER

i cant get that far into that code before it bombs into the other code of main page

razza_b

ASKER

e.result has the values

Gautham Janardhan

the other page throws error is it ? can you post that... i cant find any reason why if e.result has values it wont sow up in the grid...

razza_b

ASKER

no there are no errors being thrown, i thought it might be grid properties need set properly?

razza_b

ASKER

when i run without any breakpoints the page appears with empty grid then the just in time debugger appears, when i click no grid disapears and on bottom left of browser window it has error, when i double click it the error inside is...

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)
Timestamp: Thu, 11 Nov 2010 12:58:39 UTC

Message: Unhandled Error in Silverlight Application
Code: 4004
Category: ManagedRuntimeError
Message: System.ArgumentNullException: Value cannot be null.
Parameter name: binding
at System.Windows.Data.BindingOperations.SetBinding(DependencyObject target, DependencyProperty dp, BindingBase binding)
at System.Windows.FrameworkElement.SetBinding(DependencyProperty dp, Binding binding)
at System.Windows.Controls.DataGridTextColumn.GenerateElement(DataGridCell cell, Object dataItem)
at System.Windows.Controls.DataGridColumn.GenerateElementInternal(DataGridCell cell, Object dataItem)
at System.Windows.Controls.DataGrid.PopulateCellContent(Boolean isCellEdited, DataGridColumn dataGridColumn, DataGridRow dataGridRow, DataGridCell dataGridCell)
at System.Windows.Controls.DataGrid.AddNewCellPrivate(DataGridRow row, DataGridColumn column)
at System.Windows.Controls.DataGrid.CompleteCellsCollection(DataGridRow dataGridRow)
at System.Windows.Controls.DataGrid.GenerateRow(Int32 rowIndex, Int32 slot, Object dataContext)
at System.Windows.Controls.DataGrid.GenerateRow(Int32 rowIndex, Int32 slot)
at System.Windows.Controls.DataGrid.AddSlots(Int32 totalSlots)
at System.Windows.Controls.DataGrid.RefreshRows(Boolean recycleRows, Boolean clearRows)
at System.Windows.Controls.DataGrid.RefreshRowsAndColumns(Boolean clearRows)
at System.Windows.Controls.DataGrid.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)

Line: 57
Char: 13
Code: 0
URI: http://localhost:62381/SLERPConnTestPage.aspx

razza_b

ASKER

got it working just added extra grid properties

Thanks for your help!