winforms

C# Winforms ADO.NET - DataGridView INSERT starting with null data

I have a C# Winforms app that is connecting to a SQL Server 2005 database. The form I am currently working on allows a user to enter a large amount of different types of data into various textboxes, comboboxes, and a DataGridView to insert into the database. It all represents one particular type of machine, and the data is spread out ove...

Windows.Forms.Control derived class with TabStop and key-events

I've got a control that derives from Forms.Control, it handles mouse events and paint events just fine, but I'm having a problem with key events. I need to handle Left arrow and Right arrow, but so far the Tab control that contains my class eats these. How do I make this control selectable, focusable? ...

Visual Studio Design Time Property - Form List Drop Down

[EDIT] To be clear, I know how to get a list of forms via reflection. I'm more concerned with the design time property grid. I have a user control with a public property of the type Form. I want to be able to select a form at design time from a dropdown. I want to populate the form dropdown list from a set namespace: UI.Foo.Forms This...

How can I process a form's events in another class / module automatically in VB.NET

Here's my code: Public Class Form1 End Class Public Class Form1Handler Inherits Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click MsgBox("I") End Sub End Class I'm trying to get Form1Handler to process Form1's events automatically. How can I do this?...

Problem using Winforms WebBrowser control as editor

I am currently working on a project where I am using a WebBrowser control as an editor. I have design mode turned on and it seems to be working. The issue im having is when I try to save the Document and load another it pops up the "This document has been modified." message. What I am trying to do is as simple as this if (frontPage) { ...

put rich text box in .net

i want to put this control that i write this message in in .net is this rich text box and is this control has Databind ...

Change row/column span programatically (tablelayoutpanel)

I have a tablelayoutpanel. 2x2 - 2 columns 2 rows. For example, I added a button button1 in a 1 row, second column. button1 has a dock property set to Fill. VS Designer allows to set column/row span properties of button1. I want an availability to change row span property of button1 programatically, so it can fill all second column(1 r...

C# Entity Framework and refreshing listBox after insert

Hi, i have a problem with this code: public partial class KnihovnyForm : Form { DatabazeEntities db; public KnihovnyForm() { InitializeComponent(); db = new DatabazeEntities(); knihovnyListBox.DataSource = db.Knihovny; knihovnyListBox.DisplayMember = "Nazev"; } protected override v...

How to handle sharepoint web services exceptions

Hi, I have developed an application of share point. I am using web services for that. the problem is that while working with my app sometimes i get some exceptions. like, Exception of type 'Microsoft.SharePoint.SoapServer.SoapServerException' was thrown. Stack Strace :: at System.Web.Services.Protocols.SoapHttpClientPr...

Rich text box doesnt appear in toolbox

i select choose item from toolbox then whitch tab select to select rich text box to put in toolbox so i can put it in my form generaly how can i use rich text box in form ...

WinForms binding

I have some controls bound to a BindingSource control. I want to do a calculation when the value changes in one control and set the result on another control. Do i update the textbox the property is bound to or do i update the underlying entity which would update the control anyway(i hope)? When i change comboboxA(onpropertychange).....

Creating new Instance of the window by string Type

Camarades, I have a WindowForm application and that contains multiple forms, each with a specific name. Well, I wanted to develop a class that manages the creation of these windows, where, through the parameter type of screen (her name), the system create one for me... I'm thinking in the property "AcessibleName" in the MenuItem, put t...

WinForms checkboxes do not respond to plus/minus keys - easy workaround?

On forms created with pre dotNET VB and C++ (MFC), a checkbox control responded to the plus/minus key without custom programming. When focus was on the checbox control, pressing PLUS would check the box, no matter what the previous state (checked/unchecked), while pressing MINUS would uncheck it, no matter the previous state. C# winfor...

How to correctly rename a SplitContainer WinForms control and its panels?

I've placed a split container on a form and want to rename it and its panels to something meaningful (as I am going to add more SplitContainers on this form). Butwhen I rename splitContainer1 to mainSplitContainer, its panels are still named splitContainer1.Panel1 and splitContainer1.Panel2 (while i already have no object called splitCon...

C# Spell checker Problem

I've incorporated spell check into my win forms C# project. This is my code. public void CheckSpelling() { try { // declare local variables to track error count // and information int SpellingErrors = 0; string ErrorCountMessage = string.Empty; // create an instance of a word application...

How do i call a MouseDoubleClick event? WinForm

In my MouseDoubleClick i may run into a case where i would like to call all the controls in a list with MouseDoubleClick. However i cant call MouseDoubleClick, only add/remove events to the chain. How do i call MouseDoubleClick/OnMouseDoubleClick? ATM i workaround the problem since i know the objects MouseDoubleClick function and i pas...

[GeneratedCodeAttribute] Attribute Missing from Generated WinForm Code

The method definitions in any winform's *.Designer.cs file created by Visual Studio are not decorated with [GeneratedCodeAttribute] attributes. As a result, the generated code is analyzed when I run code metrics or code analysis. Does any one know why the attribute is not provided (it is generated code after all)? Would it be safe to add...

How cross-platform .Net framework really is?

What is normally to be done to run a WinForms application on a Mac or Linux machine? a. Just copy and run (assuming they have a Framework installed). b. Rebuild. c. Cosmetic source code modifications. d. Heavy source code modifications and forms redesign. Assuming that the application is developed as 100% managed C# 3 code by means V...

How to compare two TXT files before send it to SQL

I have to handle TXT dat files which coming from one embed device, My problem is in that device always sending all captured data but I want to take only difrences between two sending and do calculation on them. After calculation I send it to SQL using bulkinsert function. I want to extract data which is different according to first fil...

How to make a ToolStripComboBox to fill all the space available on a ToolStrip?

A ToolStripComboBox is placed after a ToolStripButton and is folowed by another one, which is right-aligned. How do I best set up the ToolStripComboBox to always adjust its length to fill all the space available between the preceeding and the folowing ToolStripButtons? In past I used to handle a parent resize event, calculate the new le...