使用C＃将数据更新到Excel工作表

Question

I am trying to update some data in an Excel sheet of the format "xlsx" using OLEDB connection, but I am unable to make out the connection establishment.

Here is my code:

        String sConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source='" + "D:\abc1.xlsx" + "';Extended Properties='Excel 8.0;HDR=Yes'";
        OleDbConnection con = new OleDbConnection(sConnectionString);

        con.Open();
        OleDbCommand com = new OleDbCommand("select * from Sheet1",con);
        OleDbDataReader reader = null;

        reader = com.ExecuteReader();
        while (reader.Read())
        {
            Console.WriteLine(reader[0]);
        }
        con.Open();

        Console.ReadLine();
    }

When I run the code, I'm facing the following exception:

The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.

Any idea how to recover from this exception or any other suggestions from which i can update my data in excel is advisable.

Answer 1

Change your PlatformTarget Type from AnyCPU to X86 .

Steps:

Goto Project Properties.
Select Build tab.
Select X86 from PlatformTarget options.

Answer 2

This could be the provider you have stated try changing it to the one which matches the Excel version on your machine

Try

Provider=Microsoft.ACE.OLEDB.12.0;Data Source='D:\abc1.xlsx';Extended Properties="Excel 12.0 Xml;HDR=YES";

Instead

Could also be that excel isnt installed

Also check that you have referenced the OLEDB library for your project

Answer 3

It is possible that there are multiple reasons for this exception.

1) You could use the OleDbEnumerator class to find out what providers are available. Accordingly you set your connection string.

2) Before that just try out below connection string. String sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source='" + "D:\\abc1.xlsx" + "';Extended Properties='Excel 8.0;HDR=Yes'";

3) If you have a 64 bit OS, there is no 64-bit version of the JET provider available and there's no alternative. As long as you want to support JET, you'll need to set the build target to x86.

Answer 4

first save as your excel workbook as Excel 97-2003 Workbook It will work in my project...

string filepath = Server.MapPath("~/ImportData/") + fileUpload.FileName;
 OleDbConnection oconn = new OleDbConnection
 (@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";  
        Extended Properties=Excel 8.0");`


    oconn.Open();
    OleDbDataAdapter adp = new OleDbDataAdapter("select * from Sheet1", oconn);
    DataSet ds = new DataSet();

    adp.Fill(ds);
    oconn.Close();`