import data from excel to datagrid and then to mysql

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I want to import data from excel to datagrid and then to mysql

C#

if ( openFileDialog1.ShowDialog ( ) == DialogResult.OK )
    {
    System.IO.StreamReader sr = new
        System.IO.StreamReader ( openFileDialog1.FileName );
    MessageBox.Show ( sr.ReadToEnd ( ) );
    sr.Close ( );
    }
            
System.Data.OleDb.OleDbConnection MyConnection;

System.Data.DataSet DtSet;
textBox1.Text = openFileDialog1.FileName;
System.Data.OleDb.OleDbDataAdapter MyCommand;

MyConnection = new System.Data.OleDb.OleDbConnection ( 
                   @"provider=Microsoft.Jet.OLEDB.4.0;Data Source='" + 
                   openFileDialog1.FileName + 
                   "';Extended Properties=Excel 8.0;");

MyCommand = new System.Data.OleDb.OleDbDataAdapter ( 
                "select * from [Sheet1$]", MyConnection );

MyCommand.TableMappings.Add ( "Table",                     //error here  
                              "openFileDialog1.FileName");  
DtSet = new System.Data.DataSet();

MyCommand.Fill(DtSet);

praktikanDataGridView.DataSource = DtSet.Tables[0];

MyConnection.Close();

The error was:

An unhandled exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
Additional information: External table is not in the expected format.

Posted 7-Jun-14 20:04pm

iismarya

Updated 8-Jun-14 2:27am

gggustafson

v2

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[no name] 8-Jun-14 8:30am

You probably need to use Microsoft.Jet.OLEDB.12.0

2 solutions

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Peter Leow · Answer 1 · 2014-06-08T02:40:00

Solution 1

Refer: C# importing excel to datagrid then save to mysql database HELP!![^]

Posted 8-Jun-14 2:40am

Peter Leow

gggustafson · Answer 2 · 2014-06-08T06:58:00

C#

// ************************** copy_excel_sheet_to_datagridview

void copy_excel_sheet_to_datagridview ( )
    {
    string  sheet_name = "Sheet1";

    if ( !retrieved_excel_filename ( ) )
        {
        return;
        }

    if ( !sheet_name_valid ( sheet_name ) )
        {
        return;
        }

    try
        {
        OleDbConnection connection = null;
        StringBuilder   connection_string = 
                            new StringBuilder ( );
        DataSet         data_set = new DataSet ( );
        string          select_command = String.Empty;

        connection_string.AppendFormat (  
            "Provider=Microsoft.Jet.OLEDB.4.0;" +
            "Data Source='{0}';" + 
            "Extended Properties=Excel 8.0;",
            excel_filename );
        select_command = String.Format ( 
                                    "select * from [{0}$]",
                                    sheet_name );
        try
            {
            connection = new OleDbConnection ( 
                                   connection_string.
                                   ToString ( ) );
            }
       catch ( Exception ex )
            {
            MessageBox.Show ( String.Format (
                                  "{0}{1}{2}",
                                  ex.Message,
                                  Environment.NewLine,
                                  ex.StackTrace ),
                              "Failed to create connection" );
            return;
            }

        try
            {
            OleDbDataAdapter adapter = null;
            OleDbCommand     command = null;

            command = new OleDbCommand ( select_command, 
                                         connection );
            adapter = new OleDbDataAdapter ( command );
            connection.Open ( );
            adapter.Fill ( data_set );
            }
       catch ( Exception ex )
            {
            MessageBox.Show ( String.Format (
                                  "{0}{1}{2}",
                                  ex.Message,
                                  Environment.NewLine,
                                  ex.StackTrace ),
                              "Failed to retrieve data" );
            return;
            }
        finally
            {
            connection.Close();
            }

        dataGridView1.DataSource = null;
        dataGridView1.DataSource = data_set.Tables [ 0 ];
        }
    catch ( Exception ex )
        {
        MessageBox.Show ( String.Format (
                              "{0}{1}{2}",
                              ex.Message,
                              Environment.NewLine,
                              ex.StackTrace ),
                          "Failed setup" );
        return;
        }
    }