Trova tabelle di query e oggetti elenco relativi a connessioni dati esterne

A volte, è necessario scoprire le tabelle di query e gli oggetti elenco relativi ad alcune connessioni dati esterne. Le tabelle di query sono correlate all’oggetto connessione dati esterna con ID connessione, mentre gli oggetti elenco sono correlati a una tabella di query.

Trova tabelle di query e oggetti elenco relativi a connessioni dati esterne

I seguenti codici di esempio confile excel di esempio spiegare come trovare le tabelle di query e gli oggetti elenco relativi alla connessione dati esterna.

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

// Load workbook object
Workbook workbook = new Workbook(dataDir + "sample.xlsm");

// Check all the connections inside the workbook
for (int i = 0; i < workbook.DataConnections.Count; i++)
{
    Aspose.Cells.ExternalConnections.ExternalConnection externalConnection = workbook.DataConnections[i];
    Console.WriteLine("connection: " + externalConnection.Name);
    PrintTables(workbook, externalConnection);
    Console.WriteLine();
}

Console.WriteLine("Press any key to continue...");
Console.ReadKey();

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
public static void PrintTables(Workbook workbook, Aspose.Cells.ExternalConnections.ExternalConnection ec)
{
    // Iterate all the worksheets
    for (int j = 0; j < workbook.Worksheets.Count; j++)
    {
        Worksheet worksheet = workbook.Worksheets[j];

        // Check all the query tables in a worksheet
        for (int k = 0; k < worksheet.QueryTables.Count; k++)
        {
            Aspose.Cells.QueryTable qt = worksheet.QueryTables[k];

            // Check if query table is related to this external connection
            if (ec.Id == qt.ConnectionId
                && qt.ConnectionId >= 0)
            {
                // Print the query table name and print its refersto range
                Console.WriteLine("querytable " + qt.Name);
                string n = qt.Name.Replace('+', '_').Replace('=', '_');
                Name name = workbook.Worksheets.Names["'" + worksheet.Name + "'!" + n];
                if (name != null)
                {
                    Range range = name.GetRange();
                    if (range != null)
                    {
                        Console.WriteLine("refersto: " + range.RefersTo);
                    }
                }
            }
        }

        // Iterate all the list objects in this worksheet
        for (int k = 0; k < worksheet.ListObjects.Count; k++)
        {
            ListObject table = worksheet.ListObjects[k];

            // Check the data source type if it is query table
            if (table.DataSourceType == Aspose.Cells.Tables.TableDataSourceType.QueryTable)
            {
                // Access the query table related to list object
                QueryTable qt = table.QueryTable;

                // Check if query table is related to this external connection
                if (ec.Id == qt.ConnectionId
                && qt.ConnectionId >= 0)
                {
                    // Print the query table name and print its refersto range
                    Console.WriteLine("querytable " + qt.Name);
                    Console.WriteLine("Table " + table.DisplayName);
                    Console.WriteLine("refersto: " + worksheet.Name + "!" + CellsHelper.CellIndexToName(table.StartRow, table.StartColumn) + ":" + CellsHelper.CellIndexToName(table.EndRow, table.EndColumn));
                }
            }
        }
    }
}

Di seguito è riportato l’output della console dell’esecuzione dei codici di esempio precedenti con thisfile excel di esempio.

 connection: AAPL Connection

querytable hp?s=AAPL+Historical+Prices

refersto: =Sheet1!$Q$1:$W$69

connection: BOSL066360W7_SQLEXPRESS Test

querytable BOSL066360W7_SQLEXPRESS Test

Table Table_BOSL066360W7_SQLEXPRESS_Test

refersto: Sheet1!A1:B3

connection: BOSL066360W7_SQLEXPRESS Test1

querytable BOSL066360W7_SQLEXPRESS Test_1

Table Table_BOSL066360W7_SQLEXPRESS_Test_1

refersto: Sheet1!D1:E2

connection: UWTI Connection

querytable hp?s=UWTI+Historical+Prices

refersto: =Sheet1!$H$1:$N$69