How to add buttons dynamically to my form

Question

I want to create 10 buttons on my form when I click on button1  No error with this code below but it doesnt work either   private void button1 Click object sender  EventArgs e        List lt Button gt  buttons   new List lt Button gt         for  int i   0  i  lt  buttons Capacity  i                  this Controls Add buttons i

User · Answer

You aren t creating any buttons  you just have an empty list   You can forget the list and just create the buttons in the loop   private void button1 Click object sender  EventArgs e               int top   50       int left   100        for  int i   0  i  lt  10  i                                   Button button   new Button                 button Left   left            button Top   top            this Controls Add button                   top    button Height   2

User · Answer

You could do something like this   Point newLoc   new Point 5 5      Set whatever you want for initial location for int i 0  i  lt  10    i        Button b   new Button        b Size   new Size 10  50       b Location   newLoc      newLoc Offset 0  b Height   5       Controls Add b       If you want them to layout in any sort of reasonable fashion it would be better to add them to one of the layout panels  i e  FlowLayoutPanel  or to align them yourself

User · Answer

use button array like this it will create 3 dynamic buttons bcoz h variable has value of 3  private void button1 Click object sender  EventArgs e    int h  3    Button   buttonArray   new Button 8    for  int i   0  i  lt   h-1  i         buttonArray i    new Button       buttonArray i  Size   new Size 20  43      buttonArray i  Name     i        buttonArray i  Click    button Click   function    buttonArray i  Location   new Point 40  20    i   20        panel1 Controls Add buttonArray i

User · Answer

Two problems- List is empty  You need to add some buttons to the list first  Second problem  You can t add buttons to  this    This  is not referencing what you think  I think  Change this to reference a Panel for instance     Assume you have on your  aspx page   lt asp Panel ID  Panel Controls  runat  server  gt  lt  asp Panel gt    private void button1 Click object sender  EventArgs e                List lt Button gt  buttons   new List lt Button gt               for  int i   0  i  lt  buttons Capacity  i                          Panel Controls Controls Add buttons i

User · Answer

It doesn t work because the list is empty  Try this   private void button1 Click object sender  EventArgs e        List lt Button gt  buttons   new List lt Button gt         for  int i   0  i  lt  10  i                  Button newButton   new Button            buttons Add newButton           this Controls Add newButton

User · Answer

You can t add a Button to an empty list without creating a new instance of that Button   You are missing the   Button newButton   new Button        in your code plus get rid of the  Capacity

User · Answer

First  you aren t actually creating 10 buttons  Second  you need to set the location of each button  or they will appear on top of each other  This will do the trick     for  int i   0  i  lt  10    i            var button   new Button          button Location   new Point button Width   i   4  0         Controls Add button

User · Answer

I had the same doubt and came up with the following contribution   int height   this Size Height   int width   this Size Width    int widthOffset   10   int heightOffset   10    int btnWidth   100      Button Widht  int btnHeight   40      Button Height   for  int i   0  i  lt  50    i          if   widthOffset   btnWidth   gt   width                                      widthOffset   10           heightOffset   heightOffset   btnHeight           var button   new Button             button Size   new Size btnWidth  btnHeight            button Name    quot  quot    i    quot  quot            button Text    quot  quot    i    quot  quot              button Click    button Click     Button Click Event          button Location   new Point widthOffset  heightOffset             Controls Add button             widthOffset   widthOffset    btnWidth                else                                         var button   new Button             button Size   new Size btnWidth  btnHeight            button Name    quot  quot    i    quot  quot            button Text    quot  quot    i    quot  quot              button Click    button Click     Button Click Event          button Location   new Point widthOffset  heightOffset             Controls Add button             widthOffset   widthOffset    btnWidth                Expected Behaviour  This will generate the buttons dinamically and using the current window size   quot break a line quot  when the button exceeds the right margin of your window

[c#] How to add buttons dynamically to my form?

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