Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
2,686 questions
1 answer
WPF: How do I bind with this behavior?
Here is an image to help clarify my question. Three TextBoxes and a TextBlock. I want the TextBlock to mirror the contents of one TextBox, but, if I mouse over another TextBox the TextBlock will mirror the Text of that TextBox instead. Mousing…
asked 2020-03-19T13:03:54.717+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(220.8, 56.00000000000001%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EO%3C/text%3E%3C/svg%3E)
OneZeroOne
1
Reputation point
answered 2020-03-20T05:10:04.843+00:00
Alex Li-MSFT
1,096
Reputation points
2 answers
One of the answers was accepted by the question author.
Using validation rules to disable a button
Hi, I know that in WPF, I could bind a button's IsEnabled property with some TextBox to receive the Validation.HasError result as its IsEnabled value. This does work for simple TextBox. But in my case, I have a DataGrid for user to do the input.…
asked 2020-02-29T07:50:28.677+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(76.8, 94%, 17%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EFK%3C/text%3E%3C/svg%3E)
Fanhua Kong
241
Reputation points
commented 2020-03-08T07:03:57.013+00:00
Fanhua Kong
241
Reputation points
0 answers
Wpf white squares bug on display
When i running wpf application theres little white squares on display where position on mouse cursor. Any one know about these wieard bug
asked 2020-03-03T17:47:31.28+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(89.60000000000001, 35%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EML%3C/text%3E%3C/svg%3E)
manoj lakmal
1
Reputation point
commented 2020-03-04T05:24:56.56+00:00
Alex Li-MSFT
1,096
Reputation points
2 answers
One of the answers was accepted by the question author.
How to sort ListView by selected column?
Source thread: how to sort list view with different dataTemplate (int, bool, string, ...), answered by Alex Li-MSFT. I have a ListView control and I want to sort all the items in the list when user click on specific column header, how to achieve it? …
asked 2020-02-25T08:03:30.603+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(48, 9%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECH%3C/text%3E%3C/svg%3E)
Charles He-MSFT
96
Reputation points Microsoft Employee
answered 2020-03-03T09:11:14.01+00:00
Peter Fleischer (former MVP)
19,231
Reputation points
1 answer
One of the answers was accepted by the question author.
When ValidationStep set to UpdatedValue, the invalid red border won't go off
Hi guys. I'm using ValidationRules to do the data check on UI. When I set the ValidationStep to UpdatedValue, it works weird. When the input is incorrect, the control shows a red border as normally. However, after I changed the value correctly, the…
asked 2020-02-28T11:54:04.897+00:00
Fanhua Kong
241
Reputation points
accepted 2020-02-29T09:02:11.687+00:00
Fanhua Kong
241
Reputation points
1 answer
Async ProcessBar not working
Source thread: Async ProgressBar not working, answered by Peter Fleischer. I'm trying to set up an async read of a bunch of files with a ProgressBar, but it doesn't work. Here is my MainWindow: Class MainWindow Dim TheProgress…
asked 2020-02-25T07:55:08.207+00:00
Charles He-MSFT
96
Reputation points Microsoft Employee
answered 2020-02-25T08:00:07.347+00:00
Alex Li-MSFT
1,096
Reputation points