1、textbox 1 . text = a . ToString()；

2. Text box 1.text = Convert. ToString(a)；

String type is a primitive type in C#, which will be automatically converted to FCL type at compile time, for example, string corresponds to System. FCL's strings.

C language can easily complete the construction of various data structures, and can directly address the memory and directly operate the hardware through pointer types.

Extended data:

Matters related to the use of C language:

The control statements provided by 1. have structural features, such as for statements and if? Else statement and switch statement, etc. It can be used to realize logical control of functions and facilitate process-oriented programming.

2. It not only contains traditional data types such as character type, integer type, floating point type and array type, but also has data types that other programming languages do not have, among which pointer data is the most flexible to use, and various data structures can be calculated through programming.

3. It contains 34 operators and handles assignments, parentheses, etc. As an operator, this makes the expression types and operator types of C programs very rich.

Baidu encyclopedia -c language