C WinForm series button easy to use

This system example is suitable for beginners , Veteran please go straight Pass Well .

Last time I demonstrated 【 establish Windows project 】, I hope beginners can fall in love with C# WinForm Programming .

Just because I am a programmer , Limited documentation , Go straight to the subject . This section is simple WinForm in Button How to use or make use of others WinForm Control instead of Button Use .

Many beginners have simple ideas , I always think about the buttons in the textbook , Only use buttons , Not flexible , This is not feasible in actual development . Of course, you can also develop one by yourself Button class （ When you become a veteran ）. In project development , You can use it directly Button, You can also use Panel,Label,PictureBox Wait for Button Use . Don't use pictures .

As shown in the figure below ：

There is a common Button Control , They have also used Panel+ Background picture instead Button Practical use . After all C/S Programming with B/S Programming is different . stay WinForm in , Many controls have Click、MouseClick、MouseDown event . These events can enable us to achieve a good mouse click operation , That is Button like that .

Let's talk about ：

Ordinary buttons ：

Direct will Button Control onto the window , Do not set any properties .

Set the button FlatStyle by Flat, This makes the button flat . This was done before XP Times are very common , But as people use Win7,Win8,Win10,Win11 after , This is not often done （ It seems that it is still very common on industrial computers ）.

 

Button to add background picture , This sets the background image and background color for the picture . Mainly because the background picture is transparent . It's not a common practice , Because there is a blank space around the picture . Of course, you may rewrite Button Base class to handle （ an old hand ）, Beginners can use the following methods . 

 

  Use Panel（ Or use Picture etc. ） Instead of Button, This practice can be removed Button White space in . Whether the buttons made by this method look good , It depends on your art background （ My bad , ha-ha ）.

How to set the picture , Let users feel that I have clicked this function （ Button ） Well , There are a lot of ways , Change background image , Change the text and so on . 

Here I introduce my practice , Like the one above 【 Check in Statistics 】, Everyone knows this is a picture , Generally, click , Just change a different color picture . This requires two 【 Check in Statistics 】 Pictures of the . My approach is to modify Panel Foreground picture of , The background image remains unchanged . The foreground picture is a picture with only one red bar （ Import into the resources of the project for standby ）：

Switch code ：

There are many such controls in the project , You can write a public method to implement it （ Remember to input the object of the current button ）. 

Icon button ：

Engineers who have developed relevant systems know , Generally, we will add an icon to the button , This icon can better reflect the function of this button .

such as ：

The plus sign indicates new , newly added , increase , Add, etc

A minus sign indicates deletion , Remove, etc

 

WinForm Of Button The position of this icon is very strange , Not on the left , To be in the middle is to be on the right . If the width of the button is too large , It just shows that it is very unfriendly . Many people don't know （ Too lazy to study ） How to set its properties to make the buttons look better . In fact, as long as you are willing to do more , Try more or try it out soon .

  Does this icon look much better ？？？？ The answer is yes

Just set a button Padding-Left Attribute is enough .

The last example , Talk about moving the mouse to change the background color of the button , Restore the background color of the button when moving out .

This requires two events , Namely MouseEnter and MouseLeave. As shown in the figure below ：

Okay , That's all for a moment , Better and richer usage needs to be explored by ourselves , Learn advanced programs , You can also see 《C# Programmer's Manual 》, This book is right C# Base class library of 、 The properties of the control are introduced in detail .

Attached are the renderings of the previously developed system , For your reference ：