Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
208 views
in Technique[技术] by (71.8m points)

c# - Get integer from Textbox

I am very new to C# and this question might sound very stupid. I wonder how I'm going get the integer(user's input) from the textBox1 and use it in if else statement?

Please give some examples

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

You need to parse the value of textbox.Text which is a string to int value. You may use int.TryParse, or int.Parse or Convert.ToInt32.

TextBox.Text property is of string type. You may look at the following sample code.

int.TryParse

This will return true if the parsing is successful and false if it fails.

int value;

if(int.TryParse(textBox1.Text,out value))
{
//parsing successful 
} 
else
{
//parsing failed. 
}

Convert.ToInt32

This may throw an exception if the parsing is unsuccessful.

int value = Convert.ToInt32(textBox1.Text);

int.Parse

int value = int.Parse(textBox1.Text);

Later you can use value in your if statement like.

if(value > 0)
{
}
else
{
}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...