C＃Excel UDF范围写回得到一个错误，异常来自HRESULT：0x800A03EC

Question

public string Name(string code) 
    { 
     MyExcelAppInstance.Volatile(true); 

     MsExcel.Application oApp = new MsExcel.Application(); 
     oApp.Visible = true; 
     oApp.UserControl = true; 
     Object oBooks = oApp.Workbooks; 
     System.Globalization.CultureInfo ci = new System.Globalization.CultureInfo("en-US"); 
     oBooks.GetType().InvokeMember("Add", System.Reflection.BindingFlags.InvokeMethod, null, oBooks, null, ci); 

     oApp.Visible = true; 
     oApp.UserControl = true; 
     System.Globalization.CultureInfo oldCI = System.Threading.Thread.CurrentThread.CurrentCulture; 
     System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US"); 
     oApp.Workbooks.Add(); 
     System.Threading.Thread.CurrentThread.CurrentCulture = oldCI; 

     MsExcel.Range rng = MyExcelAppInstance.get_Range("A1:D4", Type.Missing); 
     //Get a 2D Array of values from the range in one shot: 
     object[,] myArray = (object[,])rng.get_Value(Type.Missing); 

     // Process 'myArray' however you want here. 
     // Note that the Array returned from Excel is base 1, not base 0. 
     // To be safe, use GetLowerBound() and GetUpperBound: 
     for (int row = myArray.GetLowerBound(0); row <= myArray.GetUpperBound(0); row++) 
     { 
      for (int column = myArray.GetLowerBound(1); column <= myArray.GetUpperBound(1); column++) 
      { 
       if (myArray[row, column] is double) 
       { 
        myArray[row, column] = (double)myArray[row, column] * 2; 
       } 
      } 
     } 

     // Pass back the results in one shot: 
     rng.set_Value(Type.Missing, myArray); // where gets an error 

     return code + code; 
    } 

我收到一个错误，“异常来自HRESULT：0x800A03EC”。我试图设置区域设置，但没有奏效。没有set_value，它工作正常。任何想法，为什么这是行不通的？

Answer 1

我有一个类似的问题一次，错误竟然是由一个无效的参数（我以无效格式传递范围字符串）引起的。确保当您致电set_Value时，范围和所有数组内容是有效的。