Textbox empty field gives error

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I want to insert the value in textbox

C#

int totalexp = Int32.Parse(txtTotalExpPer.Text);

but if field is empty then it gives the error

[edit]pre tag c# code added and Treat my content as plain text, not as HTML is unchecked - PES[/edit]

Posted 23-Feb-12 22:57pm

piushshukla

Updated 23-Feb-12 23:13pm

ProEnggSoft

v2

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Sudip Saha · Answer 1 · 2012-02-23T23:02:00

Solution 3

Use it
int totalexp ;

int.tryParse(txtTotalExpPer.Text,out totalexp )

Posted 23-Feb-12 23:02pm

Sudip Saha

Comments

ProEnggSoft 25-Feb-12 3:12am

This solution is good. Hence 5!

E.F. Nijboer · Answer 2 · 2012-02-23T23:02:00

Solution 1

Have a look at TryParse. http://msdn.microsoft.com/en-us/library/f02979c7.aspx[^]

Good luck!

Posted 23-Feb-12 23:02pm

E.F. Nijboer

Manoj Kumar Choubey · Answer 3 · 2012-02-23T23:02:00

Solution 2

Use require validation or check before type conversion .......

Posted 23-Feb-12 23:02pm

Manoj Kumar Choubey

AmitKumar89 · Answer 4 · 2012-02-23T23:15:00

Solution 4

hi there..

try to use required field validator.. or else use this code..

C#

int totalexp = Convert.ToInt32(txtTotalExpPer.Text);

all the best..

Posted 23-Feb-12 23:15pm

AmitKumar89

Nandakishore G N · Answer 5 · 2012-02-23T23:56:00

Solution 5

SQL

so...u have to insert the value from totalexp to textbox(i.e,txtTotalExpPer.Text)
right...then use...txtTotalExpPer.Text=totalexp .ToString();...You Can Check The TextBox Is Empty..By Using If()...

Posted 23-Feb-12 23:56pm

Nandakishore G N

Comments

piushshukla 24-Feb-12 6:50am

No one works!

Adeyinka Oluwaseun Doyin 25-Feb-12 3:09am

check my solution to your problem , Solution 6

Adeyinka Oluwaseun Doyin · Answer 6 · 2012-02-24T21:07:00

Use this code , it works... i wrote and tested it.

C#

private void button1_Click(object sender, EventArgs e)
       {

           int expectedResultFormat;
           string ExpPer = txtTotalExpPer.Text; // first pass the value to a string variable
           bool myResult = Int32.TryParse(ExpPer, out expectedResultFormat);
           if (myResult == true) // if conversion was successful
           {
               int totalexp = Int32.Parse(txtTotalExpPer.Text);
           }

           else
           {
               // do something else to it either by setting it to a default value
               MessageBox.Show("Please only numbers are allowed !!! ");
           }
       }