Bestimmte Arbeitsblätter in einem Arbeitsbuch laden
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Standardmäßig lädt Aspose.Cells die gesamte Tabellenkalkulation in den Speicher. Es ist möglich, nur bestimmte Blätter zu laden. Dies kann die Leistung verbessern und weniger Speicher verbrauchen. Dieser Ansatz ist nützlich, wenn Sie mit einem großen Arbeitsbuch arbeiten, das aus vielen Arbeitsblättern besteht.
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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); | |
// Define a new Workbook. | |
Workbook workbook; | |
// Load the workbook with the spcified worksheet only. | |
LoadOptions loadOptions = new LoadOptions(LoadFormat.Xlsx); | |
loadOptions.LoadFilter = new CustomLoad(); | |
// Creat the workbook. | |
workbook = new Workbook(dataDir+ "TestData.xlsx", loadOptions); | |
// Perform your desired task. | |
// Save the workbook. | |
workbook.Save(dataDir+ "outputFile.out.xlsx"); |
Hier ist die Implementierung der Klasse CustomLoad.
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// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET | |
class CustomLoad : LoadFilter | |
{ | |
public override void StartSheet(Worksheet sheet) | |
{ | |
if (sheet.Name == "Sheet2") | |
{ | |
// Load everything from worksheet "Sheet2" | |
this.LoadDataFilterOptions = LoadDataFilterOptions.All; | |
} | |
else | |
{ | |
// Load nothing | |
this.LoadDataFilterOptions = LoadDataFilterOptions.Structure; | |
} | |
} | |
} |