about window form text box problem

Question

i have issue in textbox   i have two text box suppose in second textbox i have value=100.12 now i want to remove only .12 from this value after enter in first textbox with (-) or (+) sign if i used (-) sign then minus from second textbox value if i used (+)sign then plus in second textbox value please help me   demo   1. -12             2. 100.12    =100   1. +.12 2. 100.12      =100.24   not compulsory that first textbox value start with decimal with sign may be decimal or may be integer

Khaja Moizuddin · Answer

http://stackoverflow.com/questions/13062481/how-to-remove-decimal-part-from-a-number-in-c-sharp
https://msdn.microsoft.com/en-us/library/system.decimal.truncate(v=vs.110).aspx

Amit Gupta · Answer

Hey Jitender, You can try IndexOf() function to detect whether the value contains .(decimal value) or not and then perform your operation.   Try this   var _operator = textBox1.Text.Substring(0, 1); // extract the operator var value = textBox1.Text.Substring(1); // extract the value var second = Convert.ToDecimal(textBox2.Text);   if (value.IndexOf(".") == -1)       value = "." + value; //if decimal not found, insert it, as per your requirement   decimal result = 0; if (_operator == "+")       result = second + Convert.ToDecimal(value); else       result = second - Convert.ToDecimal(value);   textBox3.Text = result.ToString();   Hope it helps :)