Скачать или смотреть How to Get Multiple Cell Values from a WPF DataGrid Row Without Selection

Discover how to easily fetch multiple cell values in a WPF DataGrid row without needing to select the row. This guide simplifies the process using converters for enhanced functionality.
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This video is based on the question https://stackoverflow.com/q/76261687/ asked by the user 'UwUs' ( https://stackoverflow.com/u/19108801/ ) and on the answer https://stackoverflow.com/a/76262112/ provided by the user 'Sancho Panza' ( https://stackoverflow.com/u/4919708/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Effective Ways to Get Multiple Cell Values from a WPF DataGrid Row Without Selection

In developing WPF applications, you may find yourself needing to access multiple cell values from a DataGrid row without user interaction, like selection. This scenario can be particularly useful when you want to implement logic that changes cell properties based on certain conditions, such as highlighting critical data points. In this post, we will explore how to achieve this efficiently using data binding and converters.

The Challenge

Imagine you are working on a WPF application that displays a DataGrid with several columns, including important ones like Vlarema (a date) and RiskCat (a risk category). Your goal is to highlight certain cells in red based on specific conditions:

If RiskCat is either 2 or 3.

If the Vlarema date is older than one year or shows an invalid date format (e.g., "00/00/0000").

To achieve this, the solution involves fetching multiple cell values and utilizing a custom converter that can evaluate these conditions.

The Solution Approach

Step 1: Modify the Data Binding

First, we need to adjust the binding in your DataGrid to pass the entire row object to the converter. This way, you can access all necessary properties in one go without needing to specify individual bindings for each field.

Here’s how to set it up in your XAML:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Implement the Converter

Now that we have set up the binding, let's focus on the VlaremaBrushConverter. This converter will cast the passed-in value to your DataModel object and allow you to access both Vlarema and RiskCat.

Here’s a sample implementation for the converter:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Add Date Logic (Optional)

If you want to implement a check for whether the Vlarema date is older than a year, you will need to parse the date and apply your comparison logic after ensuring it’s valid.

Conclusion

With these simple changes, you can efficiently handle multiple cell values from a WPF DataGrid row without the need for user selection. This approach creates a more dynamic and user-friendly interface, allowing for low-effort data visibility adjustments based on your business logic.

If you have more complex requirements, consider diving into IMultiValueConverter, but for many cases, the above method will suffice.

Implement these steps in your WPF application, and you'll enhance your DataGrid's capabilities in no time!