Change TextBox.DisplayMemberPath at run time

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I have an application where the user selects different tables to edit. I'd like to reuse a TextBox for each different table. Is there a way to change the DisplayMemberPath at run time?

Posted 7-Oct-15 6:23am

Robert Kamarowski

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VR Karthikeyan 7-Oct-15 13:39pm

What is the way to choose tables that you have provided in your application? Are you using ComboBox or any other control to list out table name?

Robert Kamarowski 7-Oct-15 14:01pm

Yes, I'm using a ComboBox.

Richard Deeming 7-Oct-15 14:12pm

The WPF TextBox control doesn't have a property called DisplayMemberPath.

Robert Kamarowski 7-Oct-15 14:33pm

ugh... thank you. Sorry about the confusion.

I need to set the text value:

Text = "{Binding path=VendorName, mode=TwoWay}"

Richard Deeming 7-Oct-15 14:38pm

You can get to the binding with the BindingOperations.GetBinding method[^], which would let you change the path from code.

However, it's almost certainly going to be easier to use MVVM to display the data, in which case you can just use a single property in the view-model, with code to decide which property from the model it uses.

Robert Kamarowski 8-Oct-15 10:28am

I'm unfamiliar with MVVM, so while I start researching I'm trying to use the Binding. I'm unable to get it working. Here's the code. As you can see, I've tried several different Sources:

Binding binding = new Binding();
binding.Path = new PropertyPath("ChemicalsName");
binding.Mode = BindingMode.TwoWay;
binding.Source = dataTable.DefaultView;// GridTableEdit.DataContext; // dataTable.Rows[0][1].ToString();
BindingOperations.SetBinding(textBoxTableEditName, TextBlock.TextProperty, binding);

Robert Kamarowski 8-Oct-15 10:29am

XAML:

<textbox x:name="textBoxTableEditName" grid.column="1" grid.row="4" grid.columnspan="2" style="{DynamicResource textBoxData}" margin="0,4,0,3" width="460">

Robert Kamarowski 8-Oct-15 10:29am

Robert Kamarowski 8-Oct-15 16:19pm

Ugh... I used TextBlock.TextProperty instead of TextBox.TextProperty.

Working great. Thank you!

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