在MS Excel 2013 powerpivot中更改连接字符串

Question

I am working on same solution where i need to update connection strings of multiple files in Bulk.But , Its working for MS Excel 2010 and not for Excel 2013.

Exception Result : "Exception from HRESULT: 0x800A03EC"

Code Snippet :

Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel.Workbook ppWorkbook = (Microsoft.Office.Interop.Excel.Workbook)xlApp.Workbooks.Open(fileNameBox.Text);
Microsoft.Office.Interop.Excel.Connections connections = ppWorkbook.Connections;

string newConnectionString = "Connection String";

try
{
     foreach (Microsoft.Office.Interop.Excel.WorkbookConnection connection in connections)
     {
          connection.OLEDBConnection.Connection = newConnectionString;
     }
}
catch (Exception ex)
{ }

It occurs while assigning the connection string to OLEDBConnection. Need solution for MS Excel 2013 c#.

Answer 1

Every connection has the property "InModel". When this property is set it's a powerpivot connection and can't be updated with excel api. When you try this, you'll get the posted error message. You have to use the dlls from the powerpivot addin.

Answer 2

You could do assignment if adding OLEDB; at the beginning of your connection string. Had the same issue .