CODEWITHSUNDEEP
c#asp.net
Hiyasat
Hiyasat

Reputation: 8926

Strange behavior in TextBox.Text

TextBox.Text is string property

but if you assign an int, decimal ..etc to it it works!!

int x = 5;

Textbox1.Text = x; // it works

any body know why can tell me ?

Upvotes: 2

Views: 270

Answers (4)

SwDevMan81
SwDevMan81

Reputation: 50028

Its because of Implicit conversion.

Here is the full list of implicit numberic conversions

As Sonny has pointed out, the following is true from here

If Option Strict is On, the above example raises a compiler error. If Option Strict is Off, however, the conversion is performed implicitly, even though this implicit conversion may cause an error at runtime. For this reason, you should always use Option Strict On.

Upvotes: 8

serhio
serhio

Reputation: 28586

as already pointed out this is because of implict conversion.

An other example:

?Console.WriteLine(1)
1
?Console.WriteLine("1")
1

because 

Console.WriteLine(1) == Console.WriteLine(1.ToString())

Upvotes: 1

Bill W
Bill W

Reputation: 1498

Value types such as int, double, etc. have a ToString() method that is automatically called for you. You can see this by typing x.ToString(); What is really happening under the hood is that the value type is being "boxed" into a corresponding reference type (class) and the class has the ToString method.

Upvotes: 2

Emmanuel
Emmanuel

Reputation: 3593

C# will allow implicit conversion to String from a numeric type. So this works because it is equivalent to:

TextBox1.Text = x.ToString();

Upvotes: 2

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