Delete Number One By One in C#

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1.00/5 (1 vote)

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Hi,

I have created a calculator with a very nice GUI, but I want the users of my calculator to delete numbers one by one instead of clearing everything at once from the textbox. How do I write a code for the backspace button? Do I need to create a button really or there is a way to write the code to each btn1, btn2 etc buttons that will enable the user to reduce numbers one by one?

For example, I want to type 123 and by mistake, I typed 132 and I want to remove the 32 instead of clearing all the numbers including one.

your help is needed..

Posted 30-Aug-14 20:31pm

Member 11004573

Updated 31-May-20 23:53pm

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Tomas Takac 31-Aug-14 3:25am

How do I write a code for the backspace button?
Trim the right most digit. Where is the catch?

Do I need to create a button really or there is a way to write the code to each btn1, btn2 etc buttons that will enable the user to reduce numbers one by one?
It is not clear to me what you mean by this.

5 solutions

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 1 · 2014-08-30T21:19:00

Solution 1

Refer - Simple Calculator in C#[^]

Quote:

C#

private void btnBackspace_Click(object sender, EventArgs e)
{
    //backspace
    if (txtResult.Text != string.Empty)
    {
        int txtlength=txtResult.Text.Length;
        if (txtlength != 1)
        {
            txtResult.Text = txtResult.Text.Remove(txtlength - 1);
        }
        else
        {
            txtResult.Text = 0.ToString();
        }        
    }
}

Posted 30-Aug-14 21:19pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v2

Comments

Member 11004573 1-Sep-14 11:14am

Thank you For Answer Me,But this CODE Is Not Running Well.Please Tell Me Another Method because When I Press The Button Then All Number Removed From The Text BOX .

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 2-Sep-14 1:40am

Did you debug and see what is the issue?

Member 11004573 2-Sep-14 9:08am

YES I run All The Code when i press the button then all data Delete from the Text box.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 2-Sep-14 9:58am

That is fine. I am telling did you put a break point inside the function and debug to see what is happening inside that?

Renju Vinod · Answer 2 · 2014-09-01T17:59:00

Solution 3

Hi,

Please try this.

C#

private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            Application.DoEvents();
            SendKeys.Send("{BACKSPACE}");
        }

Posted 1-Sep-14 17:59pm

Renju Vinod

ClimerChinna · Answer 3 · 2014-09-01T19:43:00

Solution 4

use below code

C#

string s = "0";
        if (TextBox1.Text.Length > 1)
        {
            s = TextBox1.Text;
            s = s.Substring(0, s.Length - 1);
        }
        TextBox1.Text = s;

Posted 1-Sep-14 19:43pm

ClimerChinna

majid torfi · Answer 4 · 2014-08-31T17:16:00

Solution 2

C#

    private void button1_Click(object sender, EventArgs e)
        {
//backspace
             string temp= textBox1.Text;
             if (temp.Length != 0)
             {
                 textBox1.Text = temp.Substring(1);
             }
        }

Posted 31-Aug-14 17:16pm

majid torfi

Member 14849756 · Answer 5 · 2020-05-31T23:54:00

Solution 5

private void button10_Click(object sender, EventArgs e)
{
int x = result.Text.Length - 1;
result.Text = result.Text.Substring(0, x);
if (result.Text.Length == 0)
{
result.Text = "0";
}
}

Posted 31-May-20 23:54pm

Member 14849756