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You can use OLEDB to create and manipulate Excel files. Check this: Reading and Writing Excel using OLEDB.

Typical example:

using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\temp\\test.xls;Extended Properties='Excel 8.0;HDR=Yes'"))
{
  conn.Open();
  OleDbCommand cmd = new OleDbCommand("CREATE TABLE [Sheet1] ([Column1] string, [Column2] string)", conn);
  cmd.ExecuteNonQuery();
}

EDIT - Some more links:

• Hey, Scripting Guy! How Can I Read from Excel Without Using Excel?
• How To Use ADO.NET to Retrieve and Modify Records in an Excel Workbook With Visual Basic .NET
• Reading and Writing Excel Spreadsheets Using ADO.NET C# DbProviderFactory

You can use OLEDB to create and manipulate Excel files. Check this: Reading and Writing Excel using OLEDB.

Typical example:

using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\temp\\test.xls;Extended Properties='Excel 8.0;HDR=Yes'"))
{
  conn.Open();
  OleDbCommand cmd = new OleDbCommand("CREATE TABLE [Sheet1] ([Column1] string, [Column2] string)", conn);
  cmd.ExecuteNonQuery();
}

EDIT - Some more links:

• Hey, Scripting Guy! How Can I Read from Excel Without Using Excel?
• How To Use ADO.NET to Retrieve and Modify Records in an Excel Workbook With Visual Basic .NET
• Reading and Writing Excel Spreadsheets Using ADO.NET C# DbProviderFactory

You can use OLEDB to create and manipulate Excel files. Check this: Reading and Writing Excel using OLEDB.

Typical example:

using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\temp\\test.xls;Extended Properties='Excel 8.0;HDR=Yes'"))
{
  conn.Open();
  OleDbCommand cmd = new OleDbCommand("CREATE TABLE [Sheet1] ([Column1] string, [Column2] string)", conn);
  cmd.ExecuteNonQuery();
}

EDIT - Some more links:

• Hey, Scripting Guy! How Can I Read from Excel Without Using Excel?
• How To Use ADO.NET to Retrieve and Modify Records in an Excel Workbook With Visual Basic .NET
• Reading and Writing Excel Spreadsheets Using ADO.NET C# DbProviderFactory

You can use OLEDB to create and manipulate Excel files. Check this: Reading and Writing Excel using OLEDB.

Typical example:

using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\temp\\test.xls;Extended Properties='Excel 8.0;HDR=Yes'"))
{
  conn.Open();
  OleDbCommand cmd = new OleDbCommand("CREATE TABLE [Sheet1] ([Column1] string, [Column2] string)", conn);
  cmd.ExecuteNonQuery();
}

EDIT - Some more links:

• Hey, Scripting Guy! How Can I Read from Excel Without Using Excel?
• How To Use ADO.NET to Retrieve and Modify Records in an Excel Workbook With Visual Basic .NET
• Reading and Writing Excel Spreadsheets Using ADO.NET C# DbProviderFactory

You can use OLEDB to create and manipulate Excel files. Check this: Reading and Writing Excel using OLEDB.

Typical example:

using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\temp\\test.xls;Extended Properties='Excel 8.0;HDR=Yes'"))
{
  conn.Open();
  OleDbCommand cmd = new OleDbCommand("CREATE TABLE [Sheet1] ([Column1] string, [Column2] string)", conn);
  cmd.ExecuteNonQuery();
}

You can use OLEDB to create and manipulate Excel files. Check this: Reading and Writing Excel using OLEDB.

Typical example:

using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\temp\\test.xls;Extended Properties='Excel 8.0;HDR=Yes'"))
{
  conn.Open();
  OleDbCommand cmd = new OleDbCommand("CREATE TABLE [Sheet1] ([Column1] string, [Column2] string)", conn);
  cmd.ExecuteNonQuery();
}

EDIT - Some more links:

• Hey, Scripting Guy! How Can I Read from Excel Without Using Excel?
• How To Use ADO.NET to Retrieve and Modify Records in an Excel Workbook With Visual Basic .NET
• Reading and Writing Excel Spreadsheets Using ADO.NET C# DbProviderFactory