How to read /load text (*.txt) file values in datagridview using C# ..?

Question

can anyone help me..?

Here, i need to read/load text (*.txt) file values in my datagridview. this is that sample text file, which i need to load.

 S.         


        

Answer 1

Try this..

System.IO.StreamReader file = new System.IO.StreamReader("yourfile.txt");
string[] columnnames = file.ReadLine().Split(' ');
DataTable dt = new DataTable();
foreach (string c in columnnames)
{
    dt.Columns.Add(c);
}
string newline;
while ((newline = file.ReadLine()) != null)
{
    DataRow dr = dt.NewRow();
    string[] values = newline.Split(' ');
    for (int i = 0; i < values.Length; i++)
    {
        dr[i] = values[i];
    }
    dt.Rows.Add(dr);
}
file.Close();
dataGridView1.DataSource = dt;

And don't be discouraged, but this is not the proper way to ask a question out here on SO. Please get yourself familiar first.

Answer 2

One way to do it is:

var lines = File.ReadAllLines("input.txt");
if (lines.Count() > 0)
{
    foreach (var columnName in lines.FirstOrDefault()
        .Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries))
    {
        dataGridView1.Columns.Add(columnName, columnName);
    }
    foreach (var cellValues in lines.Skip(1))
    {
        var cellArray = cellValues
            .Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
        if (cellArray.Length == dataGridView1.Columns.Count)
            dataGridView1.Rows.Add(cellArray);
    }
}

Of course, this works for the sample input file that you provided. Any variation to that format would require further validation and an increase in code complexity.

Answer 3

        this.Size = new Size(750, 450);
        data.Size = new Size(700, 200);
        data.Location = new Point(5, 40);

        string[] raw_text = System.IO.File.ReadAllLines("Etudiant.txt");
        string[] data_col = null;

        int x = 0;

        foreach (string text_line in raw_text) {
            //MessageBox.Show(text_line);
            data_col = text_line.Split('|');

            if (x == 0){
                //header
                for (int i=0; i <= data_col.Length - 1; i++) {
                    table.Columns.Add(data_col[i]);
                }
                x++;
            }
            else {
                //data
                table.Rows.Add(data_col);
            }
        }

        data.DataSource = table;
        this.Controls.Add(data);