[英]Selecting a specific sheet in VSTO Excel Add-In
我正在尝试使用我的excel加载项选择特定的工作表(按名称或索引),但无济于事。
我的插件文件ThisAddIn.cs
具有:
public Excel.Workbook GetActiveWorkbook()
{
return (Excel.Workbook)Application.ActiveWorkbook;
}
我的Ribbon1.cs
具有:
namespace Test3
{
public partial class Ribbon1
{
private void Ribbon1_Load(object sender, RibbonUIEventArgs e)
{
Debug.WriteLine("Hello");
Workbook currentwb = Globals.ThisAddIn.GetActiveWorkbook();
Worksheet scratch = currentwb.Worksheets.Item[1] as Worksheet; // Error blocks here
if (scratch == null)
return;
// Worksheet scratch = currentwb.Worksheets["Sheets1"];
scratch.Range["A1"].Value = "Hello";
}
}
}
但是我得到了System.NullReferenceException: 'Object reference not set to an instance of an object.'
我是c#的新手(来自Python),并且对为什么它不起作用感到非常困惑。 任何帮助将不胜感激。
问题是我试图在加载Workbook
实例之前加载它。 换句话说,尝试在Ribbon Load
抢占实例为时过早。 抓住ButtonClick
事件上的实例很好!
尝试
Excel.Application ExApp = Globals.ThisAddIn.Application as Excel.Application;
Worksheet sheet = Globals.Factory.GetVstoObject(ExApp.ActiveWorkbook.Worksheets[1]);
Worksheet vsheet = Globals.Factory.GetVstoObject(ExApp.ActiveWorkbook.Worksheets[2]);
sheet.Cells[1, 1] = "A1";
vsheet.Cells[1, 1] = "A1 from second sheet";
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