Object reference error when the excel file has ; semicolon

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Hi,

I am reading the excel using Oledb. I am getting object reference not set to an instance error when the name of excel file has ; (semicolon).

Please help me..

My code

C#

string OledbCon = @"Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + FileName.Trim() + ";" + "Extended Properties=Excel 12.0;";

               OleCon = new OleDbConnection(OledbCon);

Fiel Name : somefiley;.xlsx.

Thanks,
prasad

Posted 12-Mar-15 2:11am

Prasad Avunoori

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Gopi Kishan Mariyala 12-Mar-15 8:45am

Can you try regex to remove the semicolon

2 solutions

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ZurdoDev · Answer 1 · 2015-03-12T02:49:00

1. The semi colon as you know breaks the fields apart in a connection string. You can try putting square brackets [] around your file name but the best option is to remove the semi-colon from the file name.

According to, https://www.connectionstrings.com/formating-rules-for-connection-strings/[^] you can try delimiting it with ".

Prasad Avunoori · Answer 2 · 2015-03-12T02:52:00

Solution 2

Hi,

I embedded the datasource in single quotes as below. It's worked for me.

C#

FileName = FileName.Replace("'", "''");
               string OledbCon = @"Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source='" + FileName.Trim() + "';" + "Extended Properties=Excel 12.0;";

Posted 12-Mar-15 2:52am