find textbox in form application in c#

Question

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I want to find textbox in form in general function like
and textbox like
txtbarcode1
txtbarcode2
txtbarcode3
txtbarcode4
txtbarcode5
txtbarcode6

C#

private void lookControl()
{
      for(int i=1;1<=12;i++)

           {

                //// find control here with ("txtbarcode"+i) //// 

           }
}

if anyway plz send me code

thanks you
Mohit

Posted 11-Aug-12 0:24am

mohit.a44

Updated 11-Aug-12 0:32am

v3

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Comments

Kenneth Haugland 11-Aug-12 6:30am

First, do you have any suggestions?

mohit.a44 11-Aug-12 6:35am

i updated my qus..

Kenneth Haugland 11-Aug-12 6:40am

use a foreach and loop through all the controls in your form, then do something when the control is a TextBox :)

Akinmade Bond 28-Aug-12 13:47pm

A for loop seems pretty tedious for such an easy action. Attempt using the foreach loop, except there is any special reason you haven't mentioned that makes you want to do otherwise.

5 solutions

Solution 3

it should be Work guys

C#

 public void LookControl()
       {
for (int i = 1; i <=12; i++)
           {
               MessageBox.Show(((TextBox)(this.Controls[("txtbarcode" + i.ToString())])).Text);
           }

       }

regards
sarva

Posted 11-Aug-12 1:17am

Sarrrva

Updated 28-Aug-12 7:17am

v3

Comments

mohit.a44 11-Aug-12 7:30am

for (int i = 1; i <= 12; i++)
{
// execute the array here

string tval = ((TextBox)Controls["txtbarcode" + i]).Text;
}

i got erorr

Object reference not set to an instance of an object.

Sarrrva 11-Aug-12 7:41am

hi mohit.a44!!

this Answer is right. please review your Code line by line

regards
sarva

mohit.a44 11-Aug-12 7:42am

No i am getting error "Object reference not set to an instance of an object."

mohit.a44 11-Aug-12 7:34am

my textbox's on form that is (txt12barcode,txtquatity,txtbarcode1......12) i want only txtbarcode1......12

Sarrrva 11-Aug-12 8:36am

This is Your Exact Answer mohit.a44 !!!
private void button3_Click(object sender, EventArgs e)
{
string name = "txtbarcode";

for (int i = 1; i <= 12; i++)
{
Control ctn = this.Controls[name+i];
MessageBox.Show(ctn.Text);
}
}

was this use ful?

Regards
sarva

mohit.a44 11-Aug-12 9:26am

No Its giving error "Object reference not set to an instance of an object."
ctn is null
I not use button event i create general function

public void LookControl()
{
string name = "txtbarcode";
for (int i = 1; i <= 12; i++)
{
Control ctn = this.Controls[name + i];
MessageBox.Show(ctn.Text);
}

}

Philip Stuyck 11-Aug-12 10:38am

You probably have a typo in one of your control names.

fjdiewornncalwe 28-Aug-12 9:37am

You assume that all TextBox controls are names 'Textbox...'

Sarrrva 28-Aug-12 9:46am

you should check this code.... its right answer Marcus Kramer....

regards
sarva

fjdiewornncalwe 28-Aug-12 9:51am

Technically, no it is not. The OP hasn't named his textboxes 'Textbox', he has named them 'txtbarcode'.

Sarrrva 28-Aug-12 9:55am

look my last reply Kramer

public void LookControl()
{
for (int i = 1; i <=12; i++)
{
MessageBox.Show(((TextBox)(this.Controls[("txtbarcode" + i.ToString())])).Text);
}

}

fjdiewornncalwe 28-Aug-12 10:04am

The proper way to fix this is to use the "Improve Solution" widget and make the changes to your solution itself. That is what people will read when they come here. OPs tend to be rather impatient for solutions so they don't read the entire comment string attached to answers. Update that and you are well on your way to being another very helpful and contributing member in the community. Cheers.

Sarrrva 28-Aug-12 13:16pm

thank you kramer...

Solution 4

C#

private void lookControl()
{
      for(int i=1;i<=12;i++)

           {
  
//// find control here with ("txtbarcode"+i) ////

                Directcast(this.controls.find("txtbarcode" + i.ToString(),True).getvalue[0],Textbox).Text="";
              
           }
}

Happy Coding!
:)

Posted 11-Aug-12 7:59am

Aarti Meswania

Solution 5

This is my last Solution:

C#

public void LookControl()
       {
           foreach (Control ctrl in this.Controls)
           {
               if (ctrl.GetType().ToString() == "System.Windows.Forms.TextBox")
               {
                   MessageBox.Show(((TextBox)(ctrl)).Text);
               }
           }
       }

otherwise use this solution

C#

public void LookControl()
        {
 for (int i = 1; i <=12; i++)
            {
                MessageBox.Show(((TextBox)(this.Controls[("txtbarcode" + i.ToString())])).Text);
            }

        }

regards
sarva

Posted 11-Aug-12 10:39am

Sarrrva

Updated 11-Aug-12 10:44am

v2

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WebMaster · Accepted Answer · 2012-08-11T00:40:00

Solution 1

There is a code:

C#

public void LookControl()
{
    foreach (Control control in this.Controls)
    {
        if (control is TextBox)
            // You can check any other property here and do what you want
            // for example:
            if ((control as TextBox).Text == string.Empty)
                ;//Action
    }
}

Let me know if there is something else in your mind.

Posted 11-Aug-12 0:40am

WebMaster

Comments

Kenneth Haugland 11-Aug-12 6:45am

That would do the job. 5!

mohit.a44 11-Aug-12 6:47am

i know this code but i want use for loop from 1 to 12 because my textbox name is same name txtbarcode only differ by count like txtbarcode1,txtbarcode2
so i want use for loop

Kenneth Haugland 11-Aug-12 6:56am

You could use his code, just check the .Name property of the textbox...

[no name] 11-Aug-12 16:24pm

If you can't write a simple for loop then you need to be reading a basic book on programming.

mohit.a44 11-Aug-12 6:59am

i want for loop

[no name] 11-Aug-12 7:13am

TextBox[] array = new TextBox[12];
int index = 0;
foreach (Control control in this.Controls)
{
if (control is TextBox)
{
array[index] = control as TextBox;
index++;
}
}

for (int i = 0; i < 12; i++)
{
// execute the array here
}

mohit.a44 11-Aug-12 7:32am

TextBox[] array = new TextBox[12];
int index = 0;
foreach (Control control in this.Controls)
{
if ((control is TextBox) && ((control as TextBox).Text != "txt12barcode") && ((control as TextBox).Text != "txtquatity"))
{
array[index] = control as TextBox;
index++;
}

}
if(index==12)
for (int i = 0; i < 12; i++)
{
// execute the array here

string tval = array[i].Text.ToString();
}

but it never go in for loop my textbox's on form that is (txt12barcode,txtquatity,txtbarcode1......12) i want only txtbarcode1......12

[no name] 11-Aug-12 7:40am

What's the point of your loop?

the result of the below code is equal to your loop.

string tval = array[11].Text;

mohit.a44 11-Aug-12 8:28am

not in if condition
if ((control is TextBox) && ((control as TextBox).Text != "txt12barcode") && ((control as TextBox).Text != "txtquatity")) { array[index] = control as TextBox; index++; }

[no name] 11-Aug-12 9:16am

I beg you to ask clear.
your last comment is part of code! OK, so what is your question?
What's the error?

Philip Stuyck 11-Aug-12 10:40am

This answer should be sufficient enough for anyone. In my opinion it is even a question that is rather trivial. If you don't know this read a book about windows forms programming.

mohit.a44 · Accepted Answer · 2012-08-28T18:49:00

Solution 6

All of you i got a right answer that is

C#

for(int i=1;i<=12;i++)
{
Control[] ctrls1 = this.Controls.Find("txtbarcode" + i, true);

      string a=ctrls1[0].Text;
}

Posted 28-Aug-12 18:49pm

mohit.a44

Comments

Sarrrva 29-Aug-12 0:55am

Good Job mohit