More about the C# MessageBox

<< Continues from the previous lesson

If you look at the message box we created in the previous section, you'll notice there's no Title in the blue area to the left of the red X - it's blank:

Click the button on your C# Form

You can add a Title quite easily.

Click OK on your Message Box. Then click the Red X on your programme to exit it. This will return you to Visual C#. Go back to the coding window (press F7 on your keyboard, if you can't see it).

Position your cursor after the final double quote of "My First Message", circled in red in the image below:

Position your cursor

Now type a comma. As soon as you type a comma, you'll see the list of Show options again:

The options for the C# Show Method

Type the following:

"Message"

Again, you need the double quotes. But your line of code should look like this:

A Title has been added

When your line of code looks like the one above, Run your programme again. Click your button and you should see a Title on your Message Box:

The title is now displayed on the messagebox

 

Other Button Options

Rather than having just an OK button, you can add buttons like Yes, No, and Cancel to your C# message boxes. We'll add a Yes and a No button.

Return to your coding window. After the second double quote of the Title you've just added, type another comma. Hit the spacebar on your keyboard once, and you'll see the IntelliSense list appear. (If it doesn't appear, just type a capital letter "M").

Message Box Buttons in C#

The one that adds buttons to a message box is, you won't be surprised to hear, MessageBoxButtons. Press the enter key on your keyboard when this option is highlighted. It will be added to the your code. Now type a full stop (period) after the final "s" of MessageBoxButtons. You'll see the button options:

The button options

Double click the one for YesNo, and it will be added to your code.

Run your programme again, and click your button. Your Message Box will then look like this:

What the Yes and No buttons look like

 

Adding Icons to a C# Message Box

Another thing you can add to brighten up your Message Box is an Icon. It's easier to see what these are than to explain!

Type another comma after MessageBoxButtons.YesNo. After the comma, type a capital letter "M" again. From the IntelliSense list that appears, double click MessageBoxIcon. After MessageBoxIcon, type a full stop to see the available icons:

MessageBox Icons

We've gone for Exclamation. Double click this to add it to your code. Run your programme again to see what the icon looks like on your Message Box:

An Asterisk has been added to the Message Box

Looks pretty impressive, hey! And all that with one line of code!

We'll move on to the important subject of variable, in the next part. First, try this Exercise.

 

Exercise
Try the other icons on the IntelliSense list, and see what they look like when your programme runs. Does the Information icon differ from the Asterisk? (To quickly display the IntelliSense list again, delete the word Asterisk from your code, then delete the full stop. Type the full stop again, and the IntelliSense list will reappear.)