textbox

问题 A window has a Grid with two columns. The left column contains a control with a constant width but with a height that adapts. The right column contains a TextBox that takes up all remaining space in the Grid (and thereby in the Window). The Grid is given a minimal width and height and is wrapped within a ScrollViewer. If the user resizes the window to be smaller than the minimal width/height of the Grid, scrollbars are displayed. This is exactly how I want it to be. However, a problem occurs

问题 I have the following "line" in my web page <div style="width:100%"> "Some Text" <DropDown> "Some more text" <TextBox> <Button> <Button> </div> The DropDown control I don't really have control over the width, as it sizes to fit whatever the longest option value is. The Buttons are fixed width. How can I get the TextBox to fill all available remaining width? I tried putting it in a table but run into the same problem, ie how do I make all other columns as small as possible to fit their content

问题 I have the following "line" in my web page <div style="width:100%"> "Some Text" <DropDown> "Some more text" <TextBox> <Button> <Button> </div> The DropDown control I don't really have control over the width, as it sizes to fit whatever the longest option value is. The Buttons are fixed width. How can I get the TextBox to fill all available remaining width? I tried putting it in a table but run into the same problem, ie how do I make all other columns as small as possible to fit their content

问题 This is a winform C# question. I have a textbox with a validating event listener to validate the content of the textbox against a regular expression. After the validation, if entered value is not proper,i am showing the messagebox and i am cancelling the event so that mouse cursor move back to the textbox which has improper value. This is working fine when i move out from that textbox to other buttons/textboxes. But when i enter improper value and close the form (with the close button on

问题 This is a winform C# question. I have a textbox with a validating event listener to validate the content of the textbox against a regular expression. After the validation, if entered value is not proper,i am showing the messagebox and i am cancelling the event so that mouse cursor move back to the textbox which has improper value. This is working fine when i move out from that textbox to other buttons/textboxes. But when i enter improper value and close the form (with the close button on

问题 I require to set text color when text changes inside textbox and meets certain criterion. I can implement this from code behind with textbox_textchanged event and set brushes.color to desired color. But I am not being able to implement this with xaml wpf approach. I am new to wpf, I'm not sure how can I set text color depending upon certain criterion when text changes in textbox. For example: For a given textbox, when text changes, it needs to determine if input text is a number then change

问题 I am trying to detect the Tab key press in a TextBox . I know that the Tab key does not trigger the KeyDown , KeyUp or the KeyPress events. I found: Detecting the Tab Key in Windows Forms of BlackWasp in the internet. They suggest to override the ProcessCmdKey, which I did, but it does not get triggered either. Is there a reliable way to detect the Tab Key press? protected override bool ProcessCmdKey(ref Message msg, Keys keyData) { bool baseResult = base.ProcessCmdKey(ref msg, keyData); if

问题 I want to simulate user input to a WPF TextBox. I want to input a character such that the OnPreviewTextInput event is triggered. I tried setting the Text through the Text property, but this didn't trigger the event: public void SomeFunction() { var textBox = new TextBox(); textBox.Text = "A"; } Can I trigger the event explicitly somehow? 回答1: See the answer to How can I programmatically generate keypress events in C#? for a good description of how to simulate input events. You could also do:

问题 I want to simulate user input to a WPF TextBox. I want to input a character such that the OnPreviewTextInput event is triggered. I tried setting the Text through the Text property, but this didn't trigger the event: public void SomeFunction() { var textBox = new TextBox(); textBox.Text = "A"; } Can I trigger the event explicitly somehow? 回答1: See the answer to How can I programmatically generate keypress events in C#? for a good description of how to simulate input events. You could also do:

问题 Text box is defined in following code: <TextBox Grid.Row="2" IsReadOnly="{Binding IsDescriptionReadOnly}" AcceptsReturn="True" TextWrapping="Wrap" VerticalScrollBarVisibility="Auto" Text="{Binding Description, UpdateSourceTrigger=PropertyChanged}"/>e When enter is pressed, a new line is not inserted. How to fix this problem? 回答1: I had similar problem, I solved it with this question using AcceptsReturn="True" . So I think, this should work. 回答2: What you have should work fine, assuming