How to access row source data?

[Temp]

Hi I think this is probably very easy, but I can't seem to find the right method.

I have two columns in the LINQ data source, Rank and PreviousRank.

In a GridViewDataColumn I have an image, and the image needs to be either an up arrow or a down arrow depending on the change of Rank compared to PreviousRank.

So on the image loaded event I have an event, now when I am in the event, how do I access the Rank and PreviousRank of the rows data?

I could bind a value to the image right? But this is only one. I see a DataContext, can I set that so when I am in the image loaded event, I can just access the data source row and go sourcerow.Rank and sourcerow.PreviousRank?

Does this make sense?

<telerikGridView:RadGridView

x:Name="RadGrid8020"

MinWidth="400" MaxWidth="900"

ShowGroupPanel="false"

CanUserDeleteRows="false"

CanUserFreezeColumns="false"

CanUserInsertRows="false"

CanUserReorderColumns="true"

CanUserResizeColumns="false"

CanUserSelect="true"

CanUserSortColumns="true"

IsReadOnly="true"

AutoGenerateColumns="false" ScrollMode="RealTime"

>

<telerikGridView:RadGridView.SortDescriptors>

<telerikData:SortDescriptor Member="Rank" SortDirection="Ascending" />

</telerikGridView:RadGridView.SortDescriptors>

<telerikGridView:RadGridView.GroupHeaderTemplate>

<DataTemplate>

<TextBlock Foreground="Green" Text="" Loaded="RadGrid8020_TextBlock_Loaded"/>

</DataTemplate>

</telerikGridView:RadGridView.GroupHeaderTemplate>

<telerikGridView:RadGridView.Columns>

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Rank}" Header="Rank" IsFilterable="false" IsSortable="true">

<telerikGridView:GridViewDataColumn.CellTemplate>

<DataTemplate>

<StackPanel Orientation="Horizontal">                                       <!--HERE IS THE IMAGE!!!-->

<Image Loaded="RadGrid8020_RankMoveImage_Loaded"/><TextBlock Text="{Binding Rank}"/>

</StackPanel>

</DataTemplate>

</telerikGridView:GridViewDataColumn.CellTemplate>

</telerikGridView:GridViewDataColumn>

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding CustomerName}" Header="Client" HeaderTextAlignment="Left" IsFilterable="false" IsSortable="true" TextAlignment="Left" />

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding JobCount}" Header="Job Count" HeaderTextAlignment="Right" IsFilterable="false" IsSortable="true" TextAlignment="Right" DataFormatString="{}{0:n0}" />

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Turnover}" Header="Turnover" HeaderTextAlignment="Right" IsFilterable="false" IsSortable="true" TextAlignment="Right" DataFormatString="{}{0:c2}" />

<telerikGridView:GridViewDataColumn DataMemberBinding="{Binding AverageJobTurnover}" Header="Avg Per Job" HeaderTextAlignment="Right" IsFilterable="false" TextAlignment="Right" DataFormatString="{}{0:c2}" />

</telerikGridView:RadGridView.Columns>

</telerikGridView:RadGridView>

private void RadGrid8020_RankMoveImage_Loaded(object sender, RoutedEventArgs e)
        {


            //==================================
            //Need to say
            //   IF rowdata.RANK < rowdata.PREVIOUSRANK then img = uparrow
            //  ELSE img = downarrow

            //==================================

            string imgfile = "iconarrowup.png";
            //string imgfile = "iconarrowdown.png";
            StreamResourceInfo sr = Application.GetResourceStream(new Uri("ewreportingapp;component/Resources/" + imgfile, UriKind.Relative));
            BitmapImage bmp = new BitmapImage();
            bmp.SetSource(sr.Stream);
            Image img = (Image)sender;
            img.Source = bmp;
        }

[Vlad]

Hi,

Indeed DataContext of the image is your data item - you can cast this to your object type and access desired property.

All the best,
Vlad
the Telerik team

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