winforms

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 have a form in which a simple gridview is populated by a table in database having columns like TicketID, Name, Company, Product etc. Now I want to add a search feature so that user could search by customer name or company or TicketID. How can I do that ? I want to place a combox box, textbox and a simple "search" button above datagrid. When the user selects TicketID for example, enters "1" in textbox and presses "Search", it should refresh datagrid with entry where TicketID = 1. Now I don't

问题 I have a borderless form (FormBorderStyle = None) with the height of 23 pixels (set in the designer) When .NET draws my form at runtime - it draws it 38 pixels high (it adds the height of a title-bar for some reason). MessageBox.Show(this.Height.ToString()); //this shows 38!! why? To work it around I have to set "Height = 23;" in the Form_Load event. private void MyForm_Load(object sender, EventArgs e) { this.Height = 23; //workaround. wtf?? } You can try this yourself in Visual Studio 2010

问题 What I'm trying to do is simple: make my WinForm on top of another, but not topmost. Like, when I click on a window, my winform will be on top of it, but when I click on something else, like a browser, my form will not be on top of it. Like a TopMost WinForm, but only for a specific process. (Im making a overlay for a game, so I need it to be topmost ONLY on the game.) Pictures to help (Everything inside the RED border is my form): And then when I change to another window (In this case,

问题 What I'm trying to do is simple: make my WinForm on top of another, but not topmost. Like, when I click on a window, my winform will be on top of it, but when I click on something else, like a browser, my form will not be on top of it. Like a TopMost WinForm, but only for a specific process. (Im making a overlay for a game, so I need it to be topmost ONLY on the game.) Pictures to help (Everything inside the RED border is my form): And then when I change to another window (In this case,

问题 I have a form in which a simple gridview is populated by a table in database having columns like TicketID, Name, Company, Product etc. Now I want to add a search feature so that user could search by customer name or company or TicketID. How can I do that ? I want to place a combox box, textbox and a simple "search" button above datagrid. When the user selects TicketID for example, enters "1" in textbox and presses "Search", it should refresh datagrid with entry where TicketID = 1. Now I don't

问题 I have a borderless form (FormBorderStyle = None) with the height of 23 pixels (set in the designer) When .NET draws my form at runtime - it draws it 38 pixels high (it adds the height of a title-bar for some reason). MessageBox.Show(this.Height.ToString()); //this shows 38!! why? To work it around I have to set "Height = 23;" in the Form_Load event. private void MyForm_Load(object sender, EventArgs e) { this.Height = 23; //workaround. wtf?? } You can try this yourself in Visual Studio 2010

问题 I am making a WinForms application which includes a form that uses a DataGridView to handle simple data manipulation. To ensure accurate entry while mitigating clutter (read: without using DataGridViewComboBoxColumn ) I have a couple event handlers which temporarily turn a DataGridViewTextBoxCell into an equivalent DataGridViewComboBoxCell connected to values known to be "clean" when editing events are raised (typically when an editable cell is clicked): private void OnCellEndEdit(object

问题 I would like to know how do I change the border color and border width of textbox as something shown below If it is mouse hover I need to display one colour and on mouse down I need to display another colour. Can anyone explain me the detailed process with the source if available. 回答1: You could do the following: Place the TextBox inside a Panel Give the panel 1 pixel padding Set the text dock to Fill Make the text box to have no border Then, handle mouse events on the text box, switch the

问题 I would like to know how do I change the border color and border width of textbox as something shown below If it is mouse hover I need to display one colour and on mouse down I need to display another colour. Can anyone explain me the detailed process with the source if available. 回答1: You could do the following: Place the TextBox inside a Panel Give the panel 1 pixel padding Set the text dock to Fill Make the text box to have no border Then, handle mouse events on the text box, switch the