Microsoft Visual Studio and C#: How to Visually Add Events to Controls

Microsoft Visual Studio and C#: How to Visually Add Events to Controls?

In the designer, click the control of interest.

In the properties window (hit F4 to bring it up), there should be a little lightning bolt icon. Clicking the icon takes you to the list of available events for that control. Double-clicking the event name will wire up a stub handler and take you to the code-behind for it.

Edit: the astute reader will see that the posted screenshot is for a web app (whups), but it's the exact same thing for a winforms app.

Is it possible to automatically hook up events in C# using VS2008?

Yes, there is! Click a control in Design view, then click on the "Events" button in the Properties window (see 1 in hand-annotated diagram below).

From here you can see a list of all the events available to that control. By typing a method name (see 2) and pressing enter, Visual Studio will create a method (if it doesn't already exist) and hook it up properly.

Alternatively, double-clicking in the field where you would type in the handler name causes Visual Studio to assign a default value.

How to add the rowsadded event in datagrid?

From Code Behind

after InitializeComponent();
add

dataGridView1.RowsAdded += dataGridView1_RowsAdded;

event should change as

private void dataGridView1_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{
    MessageBox.Show("Row added", "Error!");
}

KB Shortcut

public MyForm()
{
    InitializeComponent()
    dataGridView1.RowsAdded += (press [tab][tab] now)
}

From designer

You can do this from designer view. go to properties of the grid view and select events tab. find RowsAdded event and double click on it. it will generate event handler and event for you.

Microsoft Visual Studio and C#: How to Visually Add Events to Controls?

Controls missing from Visual Studio drop down using C#

In c# you can't add events like vb.net project, two dropdowns in C# project for class and its methods. you have to use property window to add events or double click on the controller it will add default event for the control.

How can i capture Key press events?

If you want to capture command keys in your form or control you have to override the ProcessCmdKey method. In your form use this code

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
    {
        if (keyData == (Keys.Shift | Keys.A))
        {

        }
        else if (keyData == (Keys.Control | Keys.I))
        {

        }
        return base.ProcessCmdKey(ref msg, keyData);
    }
}

Here you can find more about processing command keys.

Why do COM events cease to work when we use unit testing with Microsoft Visual Studio 2008?

Without further details, this is hard to diagnose. However, it is possible that this is actually an apartment issue: IIRC, VS runs tests in an STA. If your application uses an MTA to run the same code, it could be that you are facing deadlocking or similar issues.

How can you make a .net windows forms project look fresh?

I was actually just sprucing up a dialog today. A lot of it depends on what kind of application you have, and what OS it is running on. A couple of these tips will certainly go a long way to jazzing things up.

1. Ensure adequate spacing between controls — don't cram them all together. Space is appealing. You might also trying flowing the controls a little differently when you have more space.

2. Put in some new 3D and glossy images. You can put a big yellow exclamation mark on a custom warning dialog. Replace old toolbar buttons with new ones. Two libraries I have used and like are GlyFX and IconExperience. You can find free ones too. Ideally get a graphic artist to make some custom ones for the specific actions your application does to fill in between the common ones you use (make sure they all go together). That will go a long way to making it look fancy.

3. Try a different font. Tahoma is a good one. Often times the default font is MS Sans Serif. You can do better. Avoid Times New Roman and Comic Sans though. Also avoid large blocks of bold — use it sparingly. Generally you want all your fonts the same, and only use different fonts sparingly to set certain bits of text apart.

4. Add subdued colors to certain controls. This is a tricky one. You always want to use subdued colors, nothing bright or stark usually, but the colors should indicate something, or if you have a grid you can use it to show logical grouping. This is a slippery slope. Be aware that users might change their system colors, which will change how your colors look. Ideally give them a few color themes, or the ability to change colors.

5. Instead of thinking eye-candy, think usability. Make the most common course of action obvious. Mark Miller of DevExpress has a great talk on the Science of User Interface Design. I actually have a video of it and might be able to post it online with a little clean-up.

6. Invest in a few good quality 3rd party controls. Replacing all your controls could be a pain, but if you are using the default grids for example, you would really jazz it up with a good grid from DevExpress or some other component vendor. Be aware that different vendors have different philosophies for how their components are used, so swapping them out can be a bit of a pain. Start small to test the waters, and then try something really complicated before you commit to replacing all of them. The only thing worse then ugly grids is ugly grids mixed with pretty grids. Consistency is golden!

7. You also might look at replacing your old tool bars and menus with a Ribbon Control like Microsoft did in Office 2007. Then everyone will think you are really uptown! Again only replacing key components and UI elements without thinking you need to revamp the whole UI.

8. Of course pay attention to the basics like tab order, etc. Consistency, consistency, consistency.

Some apps lend themselves to full blown skinning, while others don't. Generally you don't want anything flashy that gets used a lot.

Visual Studio window which shows list of methods

There's a drop down just above the code window:

It's called Navigation bar and contains three drop downs: first drop down contains project, second type and third members (methods).

You can use the shortcut Ctrl + F2 (move focus to the project drop down) and press Tab twice (move focus to the third drop down) to focus it, down arrow will expand the list.

Full size image

Drawing in child window - C#

The following code is better:

private void Form2_Paint(object sender, PaintEventArgs e)
{
    Graphics g = e.Graphics;
    using (Pen p = new Pen(Color.Black))
    {
        g.DrawLine(pen, 10, 10, 100, 100);
    }
}

use the graphics instance from paint event, and using syntax to auto dispose pen object

Remeber call Show method in parent window like this:

private void button_Click(object sender, EventArgs e)
{
    Form form2 = new Form2();
    form2.ShowDialog();
}

Can't open design view on Visual Studio 2019 C# Windows Form Application

To check the target framework of your project, you can follow Project -> Properties... Application. And then you can see the target in the page.

If the target is .Net Framework, you can follow the steps provided by Flydog57.

If it is a Windows Forms App(.Net Core), there is no Designer by default.

The .NET Core Windows Forms designer is available with the Visual Studio 16.5 Preview 1. So you can try to update Visual Studio to Visual Studio 16.5 Preview 1 or a later version.

For more details, you can refer to this blog.

Updates to .NET Core Windows Forms designer in Visual Studio 16.5 Preview 1

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