如何将数据限制为前5000个字符 [英] How do I limit the data to the first 5000 characters

问题描述

我想将数据限制为前5000个字符。

I want to limit the data to the first 5000 characters.

PostData = TextBox2.Text.Substring(0, 5000)

出错：

Getting an Error:

"Index and length must refer to a location within the string.
Parameter name: length "

推荐答案

当textbox2值的长度小于5000时会发生这种情况，试试这个：

This happens when the length of textbox2 value is less than 5000, try this:

String PostData = TextBox2.Text;
if (PostData.Length > 5000){
    PostData = PostData.Substring(0,5000);
}

或者它可能在一行中：

or it could be like this in one line :

string PostData = (TextBox2.Text.Length > 5000 ? TextBox2.Text.Substring(0, 5000) : TextBox2.Text);

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