Read and Display details from CSV (Text) File in Windows Forms (WinForms) Application using C# .Net

Here I have created sample in this i have used your content in CSV file.If there is change in CSV file content then modify code as per CSV File.

C#

private void Search(object sender, EventArgs e)
{
    if (!string.IsNullOrEmpty(txtId.Text))
    {
        string currentDirectory = Environment.CurrentDirectory;
        currentDirectory = currentDirectory.Remove(currentDirectory.Length - 9);

        string csvPath = Path.GetFullPath(currentDirectory + "Files/Sample2.csv");
        string csvData = File.ReadAllText(csvPath);

        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[4] { new DataColumn("Id", typeof(int)),
                            new DataColumn("A", typeof(string)),
                            new DataColumn("B",typeof(string)),
                            new DataColumn("C",typeof(string))});

        for (int i = 1; i < csvData.Split('\n').Length; i++)
        {
            string row = csvData.Split('\n')[i];
            if (!string.IsNullOrEmpty(row))
            {
                dt.Rows.Add();
                int j = 0;
                foreach (string cell in row.Split('\t'))
                {
                    dt.Rows[dt.Rows.Count - 1][j] = cell.Trim();
                    j++;
                }
            }
        }

        DataRow[] dr = dt.Select("Id=" + this.txtId.Text.Trim());
        if (dr.ToArray().Length > 0)
        {
            lblA.Text = dr[0].ItemArray[1].ToString();
            lblB.Text = dr[0].ItemArray[2].ToString();
            lblC.Text = dr[0].ItemArray[3].ToString();
            groupBox1.Visible = true;
            lblNoRecords.Visible = false;
        }
        else
        {
            lblNoRecords.Visible = true;
            groupBox1.Visible = false;
        }
    }
}

Screenshot