Database

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 53)

Quote:

protected DataTable ExportDataFromSQLServer()
{
DataTable dataTable = new DataTable();

using (SqlConnection connection = new SqlConnection(@"Data Source= 127.0.0.1\MSSQLSERVERJAN; Initial Catalog=BHV; User ID=sa;Password=XXXXXXX"))
{
connection.Open();

// Define the query to be performed to export desired data
SqlCommand command = new SqlCommand("select * from BHVUsers", connection);
SqlDataAdapter dataAdapter = new SqlDataAdapter(command);
dataAdapter.Fill(dataTable);

var excelApplication = new Excel.Application();
var excelWorkBook = excelApplication.Application.Workbooks.Add(Type.Missing);

DataColumnCollection dataColumnCollection = dataTable.Columns;

for (int i = 1; i <= dataTable.Rows.Count + 1; i++)
{
for (int j = 1; j <= dataTable.Columns.Count; j++)
{
if (i == 1)
excelApplication.Cells[i, j] = dataColumnCollection[j - 1].ToString();
else
excelApplication.Cells[i, j] = dataTable.Rows[i - 2][j - 1].ToString();
}
}

excelApplication.Cells[1, 2] = "Voornaam";
excelApplication.Cells[1, 3] = "Achternaam";
excelApplication.Cells[1, 4] = "Geboorte Datum";
excelApplication.Cells[1, 5] = "Porto nummer";
excelApplication.Cells[1, 6] = "EHBO behaald";
excelApplication.Cells[1, 7] = "EHBO";
excelApplication.Cells[1, 8] = "BHV";
excelApplication.Cells[1, 9] = "Regisseur";
excelApplication.Cells[1, 10] = "Verlopen EHBO";
excelApplication.Cells[1, 11] = "Laatste herhaling EHBO";
excelApplication.Cells[1, 12] = "EHBO nummer";
excelApplication.Cells[1, 13] = "Verdieping";
excelApplication.Cells[1, 14] = "Ruimte";
excelApplication.Cells[1, 15] = "Email";
excelApplication.Cells[1, 16] = "Mobiel";
excelApplication.Cells[1, 17] = "Opmerking";
excelApplication.Cells[1, 18] = "BHV_Behaald";
excelApplication.Cells[1, 19] = "BHV_Verlopen";
excelApplication.Cells[1, 20] = "Laatste_Herhaling_BHV";
excelApplication.Cells[1, 21] = "Ruisnaam";
excelApplication.Cells[1, 22] = "Regisseur_Verlopen";
excelApplication.Cells[1, 23] = "Regisseur_Behaald";
excelApplication.Cells[1, 24] = "Regisseur_Herhaling";
excelApplication.Cells[1, 25] = "Active_no_yes";

excelApplication.Cells[1, 2].Font.Bold = true;
excelApplication.Cells[1, 3].Font.Bold = true;
excelApplication.Cells[1, 4].Font.Bold = true;
excelApplication.Cells[1, 5].Font.Bold = true;
excelApplication.Cells[1, 6].Font.Bold = true;
excelApplication.Cells[1, 7].Font.Bold = true;
excelApplication.Cells[1, 8].Font.Bold = true;
excelApplication.Cells[1, 9].Font.Bold = true;
excelApplication.Cells[1, 10].Font.Bold = true;
excelApplication.Cells[1, 11].Font.Bold = true;
excelApplication.Cells[1, 12].Font.Bold = true;
excelApplication.Cells[1, 13].Font.Bold = true;
excelApplication.Cells[1, 14].Font.Bold = true;
excelApplication.Cells[1, 15].Font.Bold = true;
excelApplication.Cells[1, 16].Font.Bold = true;
excelApplication.Cells[1, 17].Font.Bold = true;
excelApplication.Cells[1, 18].Font.Bold = true;
excelApplication.Cells[1, 19].Font.Bold = true;
excelApplication.Cells[1, 20].Font.Bold = true;
excelApplication.Cells[1, 21].Font.Bold = true;
excelApplication.Cells[1, 22].Font.Bold = true;
excelApplication.Cells[1, 23].Font.Bold = true;
excelApplication.Cells[1, 24].Font.Bold = true;
excelApplication.Cells[1, 25].Font.Bold = true;

int k = 0;

for (k = 1; k <= 23; k++) // this will aply it form col 1 to 10
{
excelApplication.Columns[k].ColumnWidth = 30;
}

Excel.Range formatRange; formatRange = excelApplication.get_Range("a1", "y1");
formatRange.Interior.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightBlue);
//excelApplication.Cells[1,1] = "LightBlue";

formatRange = excelApplication.get_Range("a1", "y1");
formatRange.BorderAround(Excel.XlLineStyle.xlContinuous,
Excel.XlBorderWeight.xlMedium, Excel.XlColorIndex.xlColorIndexAutomatic, Excel.XlColorIndex.xlColorIndexAutomatic);

// Save the excel file at specified location
excelApplication.ActiveWorkbook.SaveCopyAs(@"C:\tmp\test1.xlsx");

excelApplication.ActiveWorkbook.Saved = true;

MessageBox.Show("Excel file created , you can find the file " + "c:\\tmp\\test1.xlsx");
System.Diagnostics.Process.Start("c:\\tmp\\test1.xlsx");
// Close the Excel Application
excelApplication.Quit();

connection.Close();

//Release or clear the COM object
releaseObject(excelWorkBook);
releaseObject(excelApplication);
}