winforms

问题 I have a windows form project in which I want to force the user to enter values in certain fields before he presses the calculate button at the bottom. The fields include three pairs of radio buttons , five text boxes and one combo box . So basically all these fields need to contain a value in order to perform the calculations. Additionally, the text boxes should contain numbers - any double values. Moreover, I want to set a maximum value set for most of these text boxes which the user cannot

问题 I have a windows form project in which I want to force the user to enter values in certain fields before he presses the calculate button at the bottom. The fields include three pairs of radio buttons , five text boxes and one combo box . So basically all these fields need to contain a value in order to perform the calculations. Additionally, the text boxes should contain numbers - any double values. Moreover, I want to set a maximum value set for most of these text boxes which the user cannot

问题 I have a windows form project in which I want to force the user to enter values in certain fields before he presses the calculate button at the bottom. The fields include three pairs of radio buttons , five text boxes and one combo box . So basically all these fields need to contain a value in order to perform the calculations. Additionally, the text boxes should contain numbers - any double values. Moreover, I want to set a maximum value set for most of these text boxes which the user cannot

问题 I am using the Calibri font in some labels (winforms) and when I run my program, this label are displayed with a different font. I had seen this problem when testing on computers without Office (hence no Calibri installed) but now I see it everywhere, even on my computer where Calibri is well installed (and I see the labels with Calibri in the designer ; then when I run in debug mode, I see another font). The labels used to be displayed well, I've seen this problem only today (but could have

问题 I have a WinForm dialog and I want to set its Parent property to a WPF window. How can I do this? 回答1: Consider passing parameter to ShowDialog method instead of using Parent property. You can write helper class class Wpf32Window : IWin32Window { public IntPtr Handle { get; private set; } public Wpf32Window(Window wpfWindow) { Handle = new WindowInteropHelper(wpfWindow).Handle; } } public static class WindowExtensions { public static IWin32Window GetWin32Window (this Window parent) { return

问题 I'm developing a VS Package and I have this problem: I have a Background-Thread which checks every few seconds for specific changes that have to be done. This includes changing the GUI of VS 2010, which works perfectly fine without an invoke for some reason. Anyway if I try to open a new Form, it opens, but it doesn't show anything, kind of crashes and doesn't respond. I've already tried Application.OpenForms[0].invoke( /* delegate to create the form */) . This works fine, but I don't have an

问题 I'm developing a VS Package and I have this problem: I have a Background-Thread which checks every few seconds for specific changes that have to be done. This includes changing the GUI of VS 2010, which works perfectly fine without an invoke for some reason. Anyway if I try to open a new Form, it opens, but it doesn't show anything, kind of crashes and doesn't respond. I've already tried Application.OpenForms[0].invoke( /* delegate to create the form */) . This works fine, but I don't have an

问题 The following is my full error: Error in Microsoft.SqlServer.Dts.Runtime.TaskHost The Execute method on the task returned error code 0x80131621 (Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information. The Execute method must succeed, and indicate the result using an "out" parameter. I have found possible solutions here and here however I am still getting the above error. The following is my

问题 I hope this is a simple question. I do the following: In VS2010, I create a Windows Form Application From the Toolbox, drag RichTextBox control to the form Size the form and RichTextBox control large enough to display a small picture. Run (start debugging). Copy a small image from a web browser and paste to richtextbox (using ctrl-v). Select the image in the richtextbox. A resize frame is displayed with small boxes. Now when I position the cursor over one of the small resizer boxes, the

问题 I hope this is a simple question. I do the following: In VS2010, I create a Windows Form Application From the Toolbox, drag RichTextBox control to the form Size the form and RichTextBox control large enough to display a small picture. Run (start debugging). Copy a small image from a web browser and paste to richtextbox (using ctrl-v). Select the image in the richtextbox. A resize frame is displayed with small boxes. Now when I position the cursor over one of the small resizer boxes, the