Running total in textbox in asp.net

Question

hello guys how r u ? i am in trouble  my question is that i have 4 textboxes and 1 resultant textbox now i want  when user come having enter values in 4 textboxes with using tab button then the sum of that textboxes come in resultant textbox ... how can i make it possible for me in asp.net reply soon Thanks

Dorababu Meka · Answer

Here is a sample code using javascript if your requirement is some thing other than this let me know Desgin ErrorMessage=* ToolTip=Only numbers ForeColor=Red Display=Dynamic ValidationExpression=^(\d+)?$> ErrorMessage=* ToolTip=Only numbers ForeColor=Red Display=Dynamic ValidationExpression=^(\d+)?$> ErrorMessage=* ToolTip=Only numbers ForeColor=Red Display=Dynamic ValidationExpression=^(\d+)?$> ErrorMessage=* ToolTip=Only numbers ForeColor=Red Display=Dynamic ValidationExpression=^(\d+)?$> Javascript function multiplication(txtBox1 txtBox2 txtBox3 txtBox4) { var col1; var totalcol1 = 0; var weight = document.getElementById(txtBox1).value; var rate = document.getElementById(txtBox2).value; var txt3 = document.getElementById(txtBox3).value; var txt4 = document.getElementById(txtBox4).value; if (weight != '') { totalcol1 = parseInt(weight); document.getElementById(' ').value = totalcol1.toString(); if (rate != '') { totalcol1 += parseInt(rate); document.getElementById(' ').value = totalcol1.toString(); } if (txt3 != '') { totalcol1 += parseInt(txt3); document.getElementById(' ').value = totalcol1.toString(); } if (txt4 != '') { totalcol1 += parseInt(txt4); document.getElementById(' ').value = totalcol1.toString(); } } } Page load do this protected void Page_Load(object sender EventArgs e) { if (!IsPostBack) { txt1.Attributes.Add(onBlur return multiplication(' + txt1.ClientID + '' + txt2.ClientID + '' + txt3.ClientID + '' + txt4.ClientID + ')); txt2.Attributes.Add(onBlur return multiplication(' + txt1.ClientID + '' + txt2.ClientID + '' + txt3.ClientID + '' + txt4.ClientID + ')); txt3.Attributes.Add(onBlur return multiplication(' + txt1.ClientID + '' + txt2.ClientID + '' + txt3.ClientID + '' + txt4.ClientID + ')); txt4.Attributes.Add(onBlur return multiplication(' + txt1.ClientID + '' + txt2.ClientID + '' + txt3.ClientID + '' + txt4.ClientID + ')); } }

Dorababu Meka · Answer

Would you like to show each and every sum when ever the user leaves the text box  like assume I entered 10 in textbox1 should I show this on the result text box when he press Tab? or is it ok if we sum up all the 4 text box values together and display in the result text box