how to display only alphabets in textbox3??

Question

hi I have three textboxes.in textbox1 am going to enter om43 sai8 in textbox2 87billa 8. so now in textbox3 it should display both textbox values i mean to concatenate and here it should display only alphabets. like omsaibilla in textbox3 on tabout it should happen... any idea how to do this??

Aman · Answer

In your Add Button Event (to add the two input string) add following line of code : I am also embedding the source code so that you can download it . private void btnCalculate_Click(object sender EventArgs e) { char[] text1; char[] text2; string result=; int ij; //Converting input text into array text1 = textBoxFirst.Text.ToCharArray(); text2 = textBoxSecond.Text.ToCharArray(); //for first input string for(i=0;text1[i]!='\0';++i) { //trimming characters other tha alphabet while(!((text1[i]>='a'&&text1[i] ='A'&&text1[i] { for(j=i;j { text1[j] = text1[j + 1]; } text1[j] = '\0'; } } //for second input string for (i = 0; text2[i] != '\0'; i++) { //trimming characters other tha alphabet while (!((text2[i] >= 'a' && text2[i] = 'A' && text2[i] { for (j = i; j { text2[j] = text2[j + 1]; } text2[j] = '\0'; } } //Storing array into strings string result1 = new string(text1); string result2 = new string(text2); //Concating two string result = result1.Trim(new char[]{'\0'}) + result2.Trim(new char[]{'\0'}); //Showing result into textBox textBoxResult.Text = result; } If you have any query feel free to ask (Download Source Code) Also accept it as an answer if it helps.

Upendra Pratap Shahi · Answer

What happen Sreenish ? Is this worked for you or not?

Upendra Pratap Shahi · Answer

Hello  Change textbox property to AutoPostBack and write code in between TextChanged event. Then follow code as suggest previously to you.

Sumit Joshi · Answer

If you find my answer helpful accept it... Thanks

Sumit Joshi · Answer

Ok Sreenish. First you change textbox property to Autopostback and write code in between TextChanged event.

Sreenish · Answer

Yes am done with that...same can't we do using textbox events

Upendra Pratap Shahi · Answer

You can do this with javascript and jquery also.

Sreenish · Answer

using javascript i completed that...same i want using textbox events

Sreenish · Answer

using textbox event have to do that..How??

Rahul Prajapat · Answer

Hello @Sreenish call a javascript function on TextBox2 onblur event and fill TextBox3. function FillTextbox() { var str1 = document.getElementById(TextBox1).value; var str2 = document.getElementById(TextBox2).value; var s = str1 + str2; var str3=; for (var i = 0; i if (isNaN(s.charAt(i))) { str3 += (s.charAt(i)); } } document.getElementById(TextBox3).value = str3; }

Upendra Pratap Shahi · Answer

What issue you have faced?

Rajeesh Menoth · Answer

Hi use the regex and try yourself...

Sreenish · Answer

thats ok in textchanged how to write regarding my requirement

Rajeesh Menoth · Answer

Hi got to textbox property then click event and select textchanged event.. ref : http://www.dotnetperls.com/textchanged video : https://www.youtube.com/watch?v=shLsriqD47E

Sreenish · Answer

how to write in textbox event??

Rajeesh Menoth · Answer

Hi use textbox change event or jquery... check this demo : http://jsfiddle.net/rajeeshmenoth/9upm23dw/

Sreenish · Answer

there is no button only three textboxes can't we do using textbox events??

Sumit Joshi · Answer

protected void btnOk_Click( object sender EventArgs e) { TextBox3 .Text= Regex .Replace(TextBox1.Text [0-9] ) + Regex.Replace(TextBox2.Text [0-9] ); }

Upendra Pratap Shahi · Answer

Hello Sreenish  Kindly use my code. this might work for you.

Jignesh Trivedi · Answer

Hi you can also use Regex to remove number from the string protected void btnOk_Click(object sender EventArgs e) { TextBox3.Text= Regex.Replace(TextBox1.Text [0-9] ) + Regex.Replace(TextBox2.Text [0-9] ); } hope this will help you.

Rahul Prajapat · Answer

function FillTextbox() { var str1 = document.getElementById(TextBox1).value; var str2 = document.getElementById(TextBox2).value; var s = str1 + str2; var str3=; for (var i = 0; i if (isNaN(s.charAt(i))) { str3 += (s.charAt(i)); } } document.getElementById(TextBox3).value = str3; }

Rahul Prajapat · Answer

Hello @Sreenish try this protected void btnOk_Click(object sender EventArgs e) { string str= TextBox1.Text + TextBox2.Text; foreach (char c in str) { if (!char.IsDigit(c)) TextBox3.Text += c; } }

Upendra Pratap Shahi · Answer

protected void btnok_Click( object sender EventArgs e) { string sStr1 = TextBox1.Text; string sStr2 = TextBox2.Text; string sStr3 = sStr1 +  + sStr2 ; foreach ( char c in sStr3 ) { if (! Char .IsDigit(c)) { Response.Write(c); } } }

Hemlata Kushwaha · Answer

protected void btnok_Click(object sender EventArgs e) { string s1 = TextBox1.Text; string s2 = TextBox2.Text; string s3 = s1 +  + s2; foreach (char c in s3) { if (!Char.IsDigit(c)) { Response.Write(c); } } } //----- You can use any event like page_Load and click events.

Sreenish · Answer

hi hemalata that string i want to enter dynamically..and in which event we need to write this code??

Hemlata Kushwaha · Answer

string s1 = om43 sai8; string s2 = 87billa 8; string s3 = s1 +  + s2; foreach (char c in s3) { if (!Char.IsDigit(c)) { Response.Write(c); } }