textbox

问题 Just a short question : In wpf, how do I set and get updatesourcetrigger of a textbox in codebehind ? Thanks Update : I follow AngleWPF's code : var bndExp = BindingOperations.GetBindingExpression(this, TextBox.TextProperty); var myBinding = bndExp.ParentBinding; var updateSourceTrigger = myBinding.UpdateSourceTrigger; But I got the exception : An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in PresentationFramework.dll Additional information: Exception

问题 Ok I have a ListView that has 2 GridViewColumns one displaying a number and one containing a TextBox My Problem is I want to be able to Tab through all the TextBoxes I have in the GridViewColumn. With the attached Property KeyboardNavigation.TabNavigation I achieve almost what i want. What i achieve is : first TAB - whole first ListViewItem focused second TAB - first TextBox focused third TAB - whole second ListViewItem focused fourth TAB - second TextBox focused What i want is first TAB -

问题 I have a program that create TextFields inside a PDF-file so it can be used as a form. I would like to have the text I write in the TextFields I created to be centered though. How is that possible? My code currently looks like this: PDTextField textBox = new PDTextField(acroForm); textBox.setPartialName("Field " + j + " " + i); defaultAppearanceString = "/Helv 8 Tf 0 g"; //Textsize: 8 textBox.setDefaultAppearance(defaultAppearanceString); acroForm.getFields().add(textBox); PDAnnotationWidget

问题 I'm trying to use a textbox value as a session variable when the button is clicked, so far I have it working but it's hardcoded in, how do I get it to use the textbox value instead? Here's the session code: <?php session_start(); $_SESSION['url'] = "url"; ?> Here's the textbox: echo "<input type='text' id='starurl' value=''/>"; echo "<br><button onclick='save_a9({$row99['starID']})'>Approve</button><button onclick='save_d9({$row99['starID']})'>Disapprove</button><br>"; Here's the save_a9:

问题 How to remove Up Down arrow keys from asp:textbox texmode:date ? I have textbox with textmode date and I just want the calender arrow ?? how can I achieve this? in picture how can I disable the marked area controls?? <asp:TextBox Width="95%" ID="tourEndDate" runat="server" TextMode="Date" onkeypress="return false" onKeyDown="return false"></asp:TextBox></td> 回答1: Just use this: <Style> input[type=date]::-webkit-inner-spin-button { -webkit-appearance: none; display: none; } </style> Or you can

问题 Currently I am using this method to highlight text inside a TextBox, but it works just sometimes. This code has to verify if there is contained a space in the entered text. If there is a space in the text the user should be warned, and then the text inside the TextBox has to be highlighted: if (textBox.Text.Contains(" ")) { MessageBox.Show("Sorry, the value entered must not contain any spaces.", "Please enter a valid value", MessageBoxButton.OK, MessageBoxImage.Error); //Highlights incorrect

问题 I have the following code to allow only one negative symbol and also negative numbers. But my user did a testing and said she can copy/cut -ve values from one textbox to another. Ideally, they shouldn't be allowed to copy/cut and paste a negative number from a textbox to aother textbox, but, if the number is positive, then allow them to cut/copy and paste. I have to do this only in Javascript as I already have validation function on keypress event for textbox in JS. I use a hidden field for

问题 I have the following code to allow only one negative symbol and also negative numbers. But my user did a testing and said she can copy/cut -ve values from one textbox to another. Ideally, they shouldn't be allowed to copy/cut and paste a negative number from a textbox to aother textbox, but, if the number is positive, then allow them to cut/copy and paste. I have to do this only in Javascript as I already have validation function on keypress event for textbox in JS. I use a hidden field for

问题 how I can use TextEdit component for passwords input?I want to se some "*" or "#" or another symbol when I type the password. Is there some property, where i can set such a thing? 回答1: I would recommend the PasswordBox control... 回答2: Try: TextEdit.Properties.PasswordChar = '*' 来源： https://stackoverflow.com/questions/1867214/wpf-devexpress-textedit-for-password-input

问题 Let's assume that I have defined two Grid s and few TextBox es in my XAML . I want to put these TextBox es in the Grid s at runtime (I know which TextBox should be put in which Grid after starting the application). I thought it would be possible to simply add a row definition to the Grid in my C# code, however the text boxes bind to some Style . Maybe there is a simple solution (entirely in XAML - preferred)? So the question is - how to dynamically fill the grid during the runtime with the