SOLVED Empty txtbx error "input string was not in a correct format"

Question

double value; if (!Double.TryParse(tbadvance.Text, out value)) { tbadvance.Text = 0.ToString(); }

Jignesh Kumar · Answer

Hi, First check null value for text box, if (! string .IsNullOrEmpty(tbadvance.Text)) { double value; if (!Double.TryParse(tbadvance.Text, out value)) { tbadvance.Text = "0" ; } }

Rijwan Ansari · Answer

Simply do this by validation null or empty if (! string .IsNullOrEmpty(tbadvance.Text)) { .. // you code Regards Rijwan

Amit Gupta · Answer

In addition to @sachin's answer, I highly recommend you to create an extension method to avoid writing all repeated lines that helps a lot, if you have a lot of conversion.

Sachin Singh · Answer

you are assigning int or decimal to string , means TextBox.Text is always string but somewhere in code or when you clear the textbox you are assigning TextBox.Text= Convert.ToInt32(somevale); which is incorrect. or second case by mistake your textboxes are taking space but in your code you are checking for empty which is causing the error. If you are checking for empty then modify your code as double Advance; if (!Double.TryParse(txtAdvance.Text, out value)) { Advance= 0; } else Advance = Convert.ToDouble(txtAdvance.Text);

SOLVED Empty txtbx error "input string was not in a correct format"

Answers (4)