keyboard arrow keys in c sharp?

replace

TextBox tb = (TextBox)sender;

with

System.Windows.Forms.TextBox tb = (TextBox)sender;

hello guys, i would like to thank everyone for the help but still i get errors when i try the suggestions provided. i know its me doing something wrong and not your suggestions. i have made a smaller project just to test things out and am providing it here .

thanks again guys.

Hi,

It is better to use Jquery for this type for situation.

In Jquery there is a function called Next()  and Prev(), with this function you can traverse to the next and previous element . Call these functions based on the arrow keys.

Once go through the below links you will get an idea...


http://api.jquery.com/prev/
http://api.jquery.com/next/

Hi azzo
please check you form designer class .
you are missing that textbox change event in form code window.
You can write this code in your Form1.cs class

protected void 'textBox1_TextChanged(object sender,KeyEventArgs e)
{
}

Or you can delete that error line from your designer class..but you cant access the event

Sometimes - for example if you're creating a board game - numbered textboxes are all you need.

However, if you want to give your textboxes completely different names, then you can put them into an array first and then use something similar to my approach.

Hi...

I have made CheckKeys() Method. It is working fine.

If you are satisfied, do mark the answer as Accepted Answer.

Sorry about the silly error.

I've just tried the code myself and it seems to be working fine.

Can't really think what exception you could get on tb.Focus(). If tb were null, then it should have shown up in one of the earlier lines.

What is the actual exception you're getting?

You can do this with not much code provided your textboxes all have similar names such as textBox1, textBox2, ..., textBox3 and are all within the same container (say the form itself).

The first thing to do is to use the same KeyDown handler for all 60 of them. Having added one for the first textbox, just select it from the dropdown in the Properties Box for the other 59.

The code for the handler will now be as follows (off top of my head so may not be quite right):

private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
   Textbox tb = (TextBox)sender;
   int number = int.Parse(tb.Name.Substring(7)); 
   if (e.KeyData == Keys.Right)
   {
      if (number < 60)
      {
         tb = (TextBox)this.Controls["textBox" + (number + 1).ToString()];
      }
      else
      {
         tb = (TextBox)this.Controls["textBox1"]; // wrap around to number 1
      } 
      tb.Focus();
   }
   else if (e.KeyData == Keys.Left)
   {
      if (number == 1)
      {
         tb = (TextBox)this.Controls["textBox60"]; // wrap around to number 60
      }
      else
      {
         tb = (TextBox)this.Controls["textBox" + (number - 1).ToString()];
      } 
      tb.Focus();
   }
}

The code for the up and down keys will depend on how the textboxes are arranged on the form.

Hi...

One option is - set the tabindex property of the textboxes.

Eg-

Say we have 5 Textbox controls

ID-Textbox1,TabIndex=1
ID-Textbox2,TabIndex=2
ID-Textbox3,TabIndex=3
ID-Textbox4,TabIndex=4
ID-Textbox5,TabIndex=5.

Now, Initially, the focus is on Textbox1.

When the user clicks "Tab" key on the keyboard, the focus will be on Textbox2.

Hope this helps.

You have to check key a on your textbox keypress event