Set int value in a string type textBox

Question

I want to get an 'int' value in a variable and set it in a textBox. The 2nd line of this code is showing an error:

This expression cannot be used as an assignment target.

How can I solve it?

int nextCode = teacherManagerObj.GetCode();

//shows error "This expression cannot be used as an assignment target"
Convert.ToInt32(codeTextBox.Text) = nextCode;

score 5 · Accepted Answer · answered May 12 '14 at 17:24

5

int nextCode = teacherManagerObj.GetCode();
codeTextBox.Text = nextCode.ToString();

answered May 12 '14 at 17:24

Bura Chuhadar

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'nextCode' is already an 'int' type. Then why convert it again in 'int'??? this code is not working bro. – Ikr May 12 '14 at 17:26
@Ikr refresh the page. I was writing too fast. I changed my answer. :) – Bura Chuhadar May 12 '14 at 17:26

score 2 · Answer 2 · edited May 23 '17 at 12:17

You are trying to convert the Text property of codeTextBox to an Int32 and are trying to assign the Text property with an Int32, while it takes a string and you shouldn't try converting the Text property of TextBox to an Int32, since that isn't possible. You should try to convert the Int32 variable to a string and assign it to the Text property of codeTextBox.

Change

  int nextCode = teacherManagerObj.GetCode();
  Convert.ToInt32(codeTextBox.Text) = nextCode;

To:

codeTextBox.Text = Convert.ToString(nextCode);

Or:

codeTextBox.Text = nextCode.ToString();

The difference between Convert.ToString(nextCode); and nextCode.ToString(), is that the first handles null values. The second one doesn't.

Set int value in a string type textBox

2 Answers2