Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

C#: Import data from csv into datatable

Posted on 2008-10-06
6
Medium Priority
?
10,822 Views
Last Modified: 2013-12-17
Can some one help me import data from a comma separated value file into a datatable?
0
Comment
Question by:karakav
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 55

Expert Comment

by:Jaime Olivares
ID: 22649139
0
 
LVL 13

Expert Comment

by:SameerJagdale
ID: 22649165
0
 
LVL 16

Expert Comment

by:Gyanendra Singh
ID: 22649195
please find sample code
//Namespace reference
using System.IO;
using System.Data;
 
#region BuildDataSet
/// <summary>
/// method to read a text file into a DataSet
/// </summary>
/// <param name="file">file to read from</param>
/// <param name="tableName">name of the DataTable we want to add</param>
/// <param name="delimeter">delimiter to split on</param>
/// <returns>a populated DataSet</returns>
public DataSet BuildDataSet(string file,string tableName,string delimeter)
{
    //create our DataSet
    DataSet domains = new DataSet();
    //add our table
    domains.Tables.Add(tableName);
    try
    {
        //first make sure the file exists
        if (File.Exists(file))
        {
            //create a StreamReader and open our text file
            StreamReader reader = new StreamReader(file);
            //read the first line in and split it into columns
            string[] columns = reader.ReadLine().Split(delimeter.ToCharArray());
            //now add our columns (we will check to make sure the column doesnt exist before adding it)
            foreach (string col in columns)
            {
                //variable to determine if a column has been added
                bool added = false;
                string next = "";
                //our counter
                int i = 0;
                while (!(added))
                {
                    string columnName = col;
                    //now check to see if the column already exists in our DataTable
                    if (!(domains.Tables[tableName].Columns.Contains(columnName)))
                    {
                        //since its not in our DataSet we will add it
                        domains.Tables[tableName].Columns.Add(columnName, typeof(string));
                        added = true;
                    }
                    else
                    {
                        //we didnt add the column so increment out counter
                        i++;
                    }
                }
            }
            //now we need to read the rest of the text file
            string data = reader.ReadToEnd();
            //now we will split the file on the carriage return/line feed
            //and toss it into a string array
            string[] rows = data.Split("\r".ToCharArray());
            //now we will add the rows to our DataTable
            foreach (string r in rows)
            {
                string[] items = r.Split(delimeter.ToCharArray());
                //split the row at the delimiter
                domains.Tables[tableName].Rows.Add(items);
            }
        }
        else
        {
            throw new FileNotFoundException("The file " + file + " could not be found");
        }
        
    }
    catch (FileNotFoundException ex)
    {
        _message = ex.Message;
        return null;
    }
    catch (Exception ex)
    {
        _message = ex.Message;
        return null;
    }
    
    //now return the DataSet
    return domains;
}
#endregion
 
 
//Sample usage
 
//for a Windows application
DataSet data = BuildDataSet("C:\MyFile.txt","MyTable",",");
 
//For an ASP.Net application
DataSet data = BuildDataSet(Server.MapPath("MyFile.txt"),"MyTable",",");

Open in new window

0
Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

 
LVL 4

Author Comment

by:karakav
ID: 22649412
If possible I would like a solution that takes advantage of OleDb.
0
 
LVL 13

Accepted Solution

by:
SameerJagdale earned 2000 total points
ID: 22649490
0
 
LVL 4

Author Closing Comment

by:karakav
ID: 31503370
Thanks.
0

Featured Post

NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

IntroductionWhile developing web applications, a single page might contain many regions and each region might contain many number of controls with the capability to perform  postback. Many times you might need to perform some action on an ASP.NET po…
For those of you who don't follow the news, or just happen to live under rocks, Microsoft Research released a beta SDK (http://www.microsoft.com/en-us/download/details.aspx?id=27876) for the Xbox 360 Kinect. If you don't know what a Kinect is (http:…
In response to a need for security and privacy, and to continue fostering an environment members can turn to for support, solutions, and education, Experts Exchange has created anonymous question capabilities. This new feature is available to our Pr…
Screencast - Getting to Know the Pipeline

597 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question