Ladda specifika arbetsblad i en arbetsbok
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Som standard laddar Aspose.Cells hela kalkylarket i minnet. Det är möjligt att endast ladda specifika blad. Detta kan förbättra prestanda och använda mindre minne. Detta tillvägagångssätt är användbart när du arbetar med en stor arbetsbok som består av många kalkylblad.
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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"); |
Här är implementeringen av klassen 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; | |
} | |
} | |
} |