Write/Read A Text File - C#
Written by Atran, July 6th, 2007
Hello:
In this article: You will learn to Write or Read A Text File.
Let's Begin:
First Create a new project (ConsoleApp or WinApp).
And Make sure your program uses these namespaces:
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using System;
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using System.IO;
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using System.Diagnostics;
Now, we will begin writing text to a file:
1)- Create a new stream-writer and open the file:
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TextWriter tw = new StreamWriter(@"C:\Hello.txt");
2)- Write text to the file:
3)- Close the file.
4)- Launch the file:
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Process.Start(@"C:\Hello.txt");
Here is all the code:
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//Creating a new stream-writer and opening the file.
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TextWriter tsw = new StreamWriter(@"C:\Hello.txt");
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//Writing text to the file.
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tsw.WriteLine("Hello");
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//Close the file.
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tsw.Close();
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//Launch the file.
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Process.Start(@"C:\Hello.txt");
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Console.WriteLine("You're done, press any key to exit...");
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Console.ReadKey();
Now, we will begin reading text from a file:
1)- Creating a new stream-reader and opening the file:
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TextReader trs = new StreamReader(@"C:\Hello.txt");
2)- Reading text of the file:
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//Reading all the text of the file.
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Console.WriteLine(trs.ReadToEnd());
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//Or Can Reading a line of the text file.
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//Console.WriteLine(trs.ReadLine());
3)- Close the file:
Here is all the code:
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//Creating a new stream-reader and opening the file.
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TextReader trs = new StreamReader(@"C:\Hello.txt");
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//Reading all the text of the file.
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Console.WriteLine(trs.ReadToEnd());
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//Or Can Reading a line of the text file.
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//Console.WriteLine(trs.ReadLine());
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//Close the file.
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trs.Close();
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Console.WriteLine("Press any key to exit...");
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Console.ReadKey();
Hope this helped you.
Rii /
February 13th, 2008 02:47 PM
I think it 'll hlp me in project...
Thanks
prabur /
February 26th, 2008 06:11 AM
hi
i need like this hw can i read and write the data into and from .mdb files ie MS ACCESS files.... using C#.. i need that if i enterd a text in a textbox it wil go and store into a .mdb file columns.. and hw can i retrive it back...
lissi /
March 5th, 2008 12:04 PM
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// remember that you name your class GetDataFromMDB and store it under this filename
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using System;
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using System.IO;
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using System.Data;
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using System.Data.OleDb;
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namespace OLE_DataGet // Use your project-namespace here
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{
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public class GetDataFromMDB
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{
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private DataTable mDataTable = new DataTable();
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#region constructor
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/// <summary>
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/// The constructor itself
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/// </summary>
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public GetDataFromMDB
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{
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// Anything you will do here, do it.
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}
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#endregion
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#region MS Access (MDB) access
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/// <summary>
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/// Initialize and read a MDB (MS-Access-File)[here "MDB_FileName.MDB"] and
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/// store 3 field [here TableItem1,TableItem2,TableItem3] out of the
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/// database into a DataTable (mDataTable)
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/// </summary>
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/// <param name="pathToMDBfile">combined path and filename to the DataBaseFile</param>
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/// <returns>true if success</returns>
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private bool ReadDataBaseDBF(string pfad)
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{
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bool done = false;
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string source = @"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" + pathToMDBfile;
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// select Table(MDB_FileName) und FieldNames(TableItem1,TableItem2,TableItem3)
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// to be read.
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// this is the SQL select message for the Jet-Engine to be used here
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string select = "SELECT TableItem1, " +
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"TableItem2, " +
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"TableItem3 " +
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"FROM MDB_FileName";
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try
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{
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OleDbConnection conn = new OleDbConnection(source);
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conn.Open();
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OleDbCommand cmd = new OleDbCommand(select, conn);
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OleDbDataReader reader = cmd.ExecuteReader();
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// read TableItems to DataTable
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while(reader.Read())
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{
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this.mDataTable.Add(reader.GetString(0),
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reader.GetString(1),
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reader.GetString(2));
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}
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reader.Close();
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conn.Close();
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done = true;
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}
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catch (Exception e)
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{
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// Whatever you will do with exception-handling, do it here
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}
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return done;
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}
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#endregion
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#region properties
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/// <summary>
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/// get your Datatable
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/// </summary>
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/// <returns>the DataTable or null</returns>
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public DataTable MDB_DataTable
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{
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get
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{return mDataTable;}
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}
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#endregion
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}
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}
How can i ensure that i have received a file completely from an external source?Suppose i am receiving a file from an external source and i try to read the file before i have recieved the entire file.How can i ensure that the file has been received completely?
i need help regarding writting txt file data to access database because the file is of 200+MB size and the system is stuck when i open it.
plz help as soon as possible
i need help regarding writing txt file data to access database. the file size is 200+MB
plz reply as soon as possible
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