This article summarizes two examples of reading text files. One is to read all the file content at a time and the other is to read the content by line. For more information, see.
First, add the using System. IO namespace.
Code Section:
| The Code is as follows: |
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Public string readfile (string paths)
{
StreamReader sr = new StreamReader (Server. MapPath (paths), System. Text. Encoding. Default );
String input = sr. ReadToEnd ();
Return input;
} |
The above is the core code, and the complete file code is read.
| The Code is as follows: |
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Using System;
Using System. Collections;
Using System. Configuration;
Using System. Data;
Using System. Linq;
Using System. Web;
Using System. Web. Security;
Using System. Web. UI;
Using System. Web. UI. HtmlControls;
Using System. Web. UI. WebControls;
Using System. Web. UI. WebControls. WebParts;
Using System. Xml. Linq;
Using System. IO;
Namespace test
{
Public partial class Text: System. Web. UI. Page
{
Protected void Page_Load (object sender, EventArgs e)
{
Response. Write (GetInterIDList ("asp.txt "));
}
// Read the contents of the txt file
Public string GetInterIDList (string strfile)
{
String strout;
Strout = "";
If (! File. Exists (System. Web. HttpContext. Current. Server. MapPath (strfile )))
{
}
Else
{
StreamReader sr = new StreamReader (System. Web. HttpContext. Current. Server. MapPath (strfile), System. Text. Encoding. Default );
String input = sr. ReadToEnd ();
Sr. Close ();
Strout = input;
}
Return strout;
} }
} |
One row reads the current file
Example
| The Code is as follows: |
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Using System;
Using System. Data;
Using System. Configuration;
Using System. Web;
Using System. Web. Security;
Using System. Web. UI;
Using System. Web. UI. WebControls;
Using System. Web. UI. WebControls. WebParts;
Using System. Web. UI. HtmlControls; Using System. IO;
Using System. Text; Public partial class _ Default: System. Web. UI. Page
{
Protected void Page_Load (object sender, EventArgs e)
{
If (! This. IsPostBack)
{
String Path = Server. MapPath ("4.txt ");
InsertStr (Path );
}
} Public void insertStr (string Path)
{
String strLine = "";
Int I = 0;
Try
{
StreamReader sr = new StreamReader (Path, Encoding. GetEncoding ("GB2312 ")); StrLine = sr. ReadLine (); While (strLine! = Null)
{
Response. Write (strLine + "<br> ");
StrLine = sr. ReadLine ();
I ++;
}
Response. Write (I );
Sr. Dispose ();
Sr. Close ();
}
Catch
{
}
}
} |
