How to create many labels and textboxes dynamically depending on the value of an integer variable

Question

Is there any way to dynamically create and display 'n' Labels with 'n' corresponding Textboxs when we know value of 'n' after for example, clicking "Display" button.

Let me know if anything make you don't understand my question. Thank you!

I am working with VS C# Express 2010 Windows Form.

User · Answer

You can try this   int cleft   1  intaleft   1  private void button2 Click object sender  EventArgs e          TextBox txt   new TextBox         this Controls Add txt        txt Top   cleft   40       txt Size   new Size 200  16        txt Left   150       cleft   cleft   1       Label lbl   new Label         this Controls Add lbl        lbl Top   aleft   40       lbl Size   new Size 100  16        lbl ForeColor   Color Blue       lbl Text    BoxNo CardNo        lbl Left   70       aleft   aleft   1       return    private void btd Click object sender  EventArgs e           Here you Delete Text Box One By One int ix for Text Box      for  int ix   this Controls Count - 2  ix  gt   0  ix--        Here you Delete Lable One By One int ix for Lable      for  int x   this Controls Count - 2  x  gt   0  x--                if  this Controls ix  is TextBox           this Controls ix  Dispose            if  this Controls x  is Label           this Controls x  Dispose            return

User · Answer

Here is a simple example that should let you keep going add somethink that would act as a placeholder to your winform can be TableLayoutPanel

and then just add controls to it

   for ( int i = 0; i < COUNT; i++ ) {


    Label lblTitle = new Label();
    lblTitle.Text = i+"Your Text";
    youlayOut.Controls.Add( lblTitle, 0, i );

    TextBox txtValue = new TextBox();
    youlayOut.Controls.Add( txtValue, 2, i );
}

User · Answer

I would create a user control which holds a Label and a Text Box in it and simply create instances of that user control  n  times  If you want to know a better way to do it and use properties to get access to the values of Label and Text Box from the user control  please let me know   Simple way to do it would be   int n   4     Or whatever value - n has to be global so that the event handler can access it  private void btnDisplay Click object sender  EventArgs e        TextBox   textBoxes   new TextBox n       Label   labels   new Label n        for  int i   0  i  lt  n  i                  textBoxes i    new TextBox               Here you can modify the value of the textbox which is at textBoxes i           labels i    new Label               Here you can modify the value of the label which is at labels i                This adds the controls to the form  you will need to specify thier co-ordinates etc  first      for  int i   0  i  lt  n  i                  this Controls Add textBoxes i            this Controls Add labels i              The code above assumes that you have a button btnDisplay and it has a onClick event assigned to btnDisplay Click event handler  You also need to know the value of n and need a way of figuring out where to place all controls  Controls should have a width and height specified as well   To do it using a User Control simply do this   Okay  first of all go and create a new user control and put a text box and label in it   Lets say they are called txtSomeTextBox and lblSomeLabel  In the code behind add this code    public string GetTextBoxValue           return this txtSomeTextBox Text       public string GetLabelValue           return this lblSomeLabel Text       public void SetTextBoxValue string newText          this txtSomeTextBox Text   newText       public void SetLabelValue string newText          this lblSomeLabel Text   newText       Now the code to generate the user control will look like this  MyUserControl is the name you have give to your user control    private void btnDisplay Click object sender  EventArgs e        MyUserControl   controls   new MyUserControl n        for  int i   0  i  lt  n  i                  controls i    new MyUserControl             controls i  setTextBoxValue  some value to display in text            controls i  setLabelValue  some value to display in label               Now if you write controls i  getTextBoxValue   it will return  some value to display in text  and controls i  getLabelValue   will return  some value to display in label   These value will also be displayed in the user control                This adds the controls to the form  you will need to specify thier co-ordinates etc  first      for  int i   0  i  lt  n  i                  this Controls Add controls i              Of course you can create more methods in the usercontrol to access properties and set them  Or simply if you have to access a lot  just put in these two variables and you can access the textbox and label directly   public TextBox myTextBox  public Label myLabel    In the constructor of the user control do this   myTextBox   this txtSomeTextBox  myLabel   this lblSomeLabel    Then in your program if you want to modify the text value of either just do this   control i  myTextBox Text    some random text      Same applies to myLabel   Hope it helped

User · Answer

Suppose you have a button that when pressed sets n to 5, you could then generate labels and textboxes on your form like so.

var n = 5;
for (int i = 0; i < n; i++)
{
    //Create label
    Label label = new Label();
    label.Text = String.Format("Label {0}", i);
    //Position label on screen
    label.Left = 10;
    label.Top = (i + 1) * 20;
    //Create textbox
    TextBox textBox = new TextBox();
    //Position textbox on screen
    textBox.Left = 120;
    textBox.Top = (i + 1) * 20;
    //Add controls to form
    this.Controls.Add(label);
    this.Controls.Add(textBox);
}

This will not only add them to the form but position them decently as well.

[c#] How to create many labels and textboxes dynamically depending on the value of an integer variable?

The answer is

Examples related to c#

Examples related to winforms

Tags