Trova Tabelle di Query e Oggetti Elenco relativi a Connessioni Dati Esterne
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A volte è necessario scoprire le Tabelle di Query e gli Oggetti Elenco relativi a alcune Connessioni Dati Esterne. Le Tabelle di Query sono correlate all’oggetto Connessione Dati Esterne con Id Connessione, mentre gli Oggetti Elenco sono correlati a una Tabella di Query.
Trova query tabelle e oggetti elenco relativi alle connessioni esterne dei dati
I seguenti codici di esempio con file Excel di esempio spiegano come trovare tabelle di query e oggetti elenco correlati a una connessione dati esterne.
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// 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(); |
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// 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)); | |
} | |
} | |
} | |
} | |
} |
Il seguente è l’output della console dell’esecuzione dei codici di esempio precedenti con questo file 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