Import data from text file and display in datagrid

Question

I want to import data from a text file and to display it in a data grid. The text file is delimited.The first row contains column headers and the rest contains the data for

Answer 1

why you want to create the class?? you can use the below code as well.. it will dynamically make the DataTable

check here as well..

public class Helper
{
    public static DataTable DataTableFromTextFile(string location, char delimiter = ',')
    {
        DataTable result;

        string[] LineArray = File.ReadAllLines(location);

        result = FormDataTable(LineArray, delimiter);

        return result;
    }

    private static DataTable FormDataTable(string[] LineArray, char delimiter)
    {
        DataTable dt = new DataTable();

        AddColumnToTable(LineArray, delimiter, ref dt);

        AddRowToTable(LineArray, delimiter, ref dt);

        return dt;
    }

    private static void AddRowToTable(string[] valueCollection, char delimiter, ref DataTable dt)
    {

        for (int i = 1; i < valueCollection.Length; i++)
        {
            string[] values = valueCollection[i].Split(delimiter);
            DataRow dr = dt.NewRow();
            for (int j = 0; j < values.Length; j++)
            {
                dr[j] = values[j];
            }
            dt.Rows.Add(dr);
        }
    }

    private static void AddColumnToTable(string[] columnCollection, char delimiter, ref DataTable dt)
    {
        string[] columns = columnCollection[0].Split(delimiter);
        foreach (string columnName in columns)
        {
            DataColumn dc = new DataColumn(columnName, typeof(string));
            dt.Columns.Add(dc);
        }
    }

}

now to show the this DataTable to your grid view you just need to call as below

dataGridView1.DataSource = Helper.DataTableFromTextFile("Testing.txt");

for text file like -

fname, sname, age
deepak, sharma, 23
Gaurav, sharma, 32
Alok, Kumar, 33

as you have not specified the delimiter char it will use , by default else you have to specified if have any other like

dataGridView1.DataSource = Helper.DataTableFromTextFile("Testing.txt", '|');

for text file like -

fname| sname| age
deepak| sharma| 23
Gaurav| sharma| 32
Alok| Kumar| 33

it works like charm,

http://mytactics.blogspot.com/2014/11/show-delimiter-text-file-data-to.html