CODEWITHSUNDEEP
c#wpfdatagridhighlighting
illegal-immigrant
illegal-immigrant

Reputation: 8234

WPF DataGrid rows/columns/cells highlighting

I'm implementing data diff in my project and now i have a need to display my results to user. (I'm inspecting two arrays of arbitrary data and finding mismatches in them, my results are something like : "Status : mismatch, Property : ... Index: ..." (some class)). So It's working pretty well by now,first I thought it will be easy to highlight results in DataGrid, but when i started to implement this i realized that I just can't imagine how to get this done...I need to highlight preset cells and rows...Does any common solution exist? P.S DataGrid is binding to some data (using views). I have no much experience in WPF, so don't want to reinvent the wheel, think something should exist (solution, open-source project, code samples).

Upvotes: 4

Views: 5678

Answers (1)

The Smallest
The Smallest

Reputation: 5773

Here is example of what you need.

  1. I assume, that ChangeItem is class for storing one line. So in xaml you bind ChangeItem[] to ItemsSource property of your datagrid.

    class ChangeItem
{
    public string Previous { get; set; }
    public string Current  { get; set; }
    public bool HasDiff { return this.Previous != this.Current; } 
}

  2. In Xaml add special style to your Resources

    <Style TargetType="{x:Type DataGridCell}">
    <Style.Triggers>
       <DataTrigger Binding="{Binding HasDiff}" Value="true">
          <Setter Property="Background" Value="Red"/>
       </DataTrigger>
    </Style.Triggers>
</Style>

  3. If you need to support editing and real-time background changes, depending on changes made. Then properly implement INotifyPropertyChanged in class ChangeItem.

  4. If you need to have more than 2 states (HasError/NoErrors), then create new enum, representing states. For example:

    public enum LineState
{
     Normal,
     SmallError,
     MegaError,
}

    And replace public bool HasDiff { ... } property with something like public LineState State { ... }.

Hope this helps.

Upvotes: 4

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