Hello,
We have created a script using standard pivots tables and excel to update many excel files at once with a new DB connection with the script below (maybe this will be helpful to some!). This lets us update a folder of pre-built excel reports at once with a specified Server and DB name, keeping their views they are tied to.
We are updating our standard pivots to take advantage of Power Query & using dashboards. Our goal is to convert this script below to work with updating the power query datasources, rather than the default excel connections in the same manner. (Drop excel files with power queries into a folder, define the new datasource settings (Server Name & DB) , and update all files) The original person who wrote this script has moved on several years ago - so any help is appreciated if you can point us in the right direction!
public void UpdateConnectionStrings(List<FileInfo> pExcelFiles, string pOldServerName, string pOldDatabaseName, string pNewServerName, string pNewDatabaseName)
{
Microsoft.Office.Interop.Excel.Application application = null;
try
{
// Create a new application
application = new Microsoft.Office.Interop.Excel.Application();
foreach (FileInfo excelFile in pExcelFiles)
{
// Open the file
application.Workbooks.Open(excelFile.FullName);
// Get the query tables from the worksheets
var sheets = application.Sheets.OfType<Worksheet>();
var queryTables = sheets.SelectMany(s => GetQueryTables(s));
// Change the connection string for any query tables
foreach (var queryTable in queryTables)
{
queryTable.Connection = queryTable.Connection.Replace(pOldServerName, pNewServerName);
queryTable.Connection = queryTable.Connection.Replace(pOldDatabaseName, pNewDatabaseName);
}
// Get the pivot table data from the workbooks
var workbooks = application.Workbooks.Cast<Workbook>();
var pivotCaches = workbooks.SelectMany(w => GetPivotCaches(w));
// Change the connection string for any pivot tables
foreach (var pivotCache in pivotCaches)
{
pivotCache.Connection = pivotCache.Connection.Replace(pOldServerName, pNewServerName);
pivotCache.Connection = pivotCache.Connection.Replace(pOldDatabaseName, pNewDatabaseName);
}
foreach (var workbook in workbooks)
{
workbook.Save();
workbook.Close();
}
}
}
catch (Exception e)
{
throw new Exception(e.Message);
}
finally
{
// Make sure we quit the application
if (application != null)
{
application.Quit();
}
}
}
