Why csv file doesnt show special characters when export?

Question

Hi,

I have this code used on my application to export datagridview as csv file.It worked fine but csv doesnt show cell values correclty.See below images and I have pasted my code as well.What can I change on this code to fix this?

 

Here is the datagridview

This is the exported csv and it shows like this



Here is my code

public void writeCSV(DataGridView gridIn, string outputFile)
        {

            //test to see if the DataGridView has any rows
            if (gridIn.RowCount > 0)
            {
                string value = "";
                DataGridViewRow dr = new DataGridViewRow();
                 StreamWriter swOut = new StreamWriter(outputFile);


                //write header rows to csv
                for (int i = 0; i <= gridIn.Columns.Count - 1; i++)
                {
                    if (i > 0)
                    {
                        swOut.Write(",");
                    }
                    swOut.Write(gridIn.Columns[i].HeaderText);
                }

                swOut.WriteLine();

                //write DataGridView rows to csv
                for (int j = 0; j <= gridIn.Rows.Count - 2; j++)
                {
                    if (j > 0)
                    {
                        swOut.WriteLine();
                    }

                    dr = gridIn.Rows[j];

                    for (int i = 0; i <= gridIn.Columns.Count - 1; i++)
                    {
                        if (i > 0)
                        {
                            swOut.Write(",");
                        }

                        value = dr.Cells[i].Value.ToString();
                        //replace comma's with spaces
                        value = value.Replace(',', ' ');
                        //replace embedded newlines with spaces
                        value = value.Replace(Environment.NewLine, " ");

                        swOut.Write(value);
                    }
                }
                swOut.Close();
            }
        }