Question

我正在尝试返回一个整数数组，无法让它工作......

下面是我在return array

上发生以下错误的代码

无法将类型'int []'隐式转换为'int'

  public int getIndexes(int num) 
    {
        var wb = (Excel.Workbook)Globals.ThisAddIn.Application.ActiveWorkbook;
        var wsEvars = wb.Sheets["Evars"];


        Excel.Worksheet sheet = null;
        if (num == 0) sheet = wsEvars;

        if (num != 2)
        {
            var rng = (Excel.Range)sheet.Range[sheet.Cells[3, 2], sheet.Cells[3, 27]];
            var wsValues = rng.Cells.Value;
            int scopeIndex = 0;
            int methodIndex = 0;
            int delimiterIndex = 0;
            int formatIndex = 0;
            int count = 0;

            foreach (var head in wsValues)
            {
                if (head == "*Scope")
                    scopeIndex = count + 1;
                if (head == "Set Method")
                    methodIndex = count + 1;
                if (head == "Delimiter")
                    delimiterIndex = count + 1;
                if (head == "Format")
                    formatIndex = count + 1;
            }
            int[] array = new int[]{scopeIndex, methodIndex, delimiterIndex, formatIndex};
            return array;
        }
    }

Answer 1

问题是您的方法正在返回int而不是int[]。此外，哟正在if块内进行返回，这将不会确保return将被命中，因为这只会在条件为真时发生。如果条件是假的怎么办？在这种情况下你不会返回任何东西。从块中获取return：

public int[] getIndexes(int num) 
{
    int[] array = null;
    var wb = (Excel.Workbook)Globals.ThisAddIn.Application.ActiveWorkbook;
    var wsEvars = wb.Sheets["Evars"];


    Excel.Worksheet sheet = null;
    if (num == 0) sheet = wsEvars;

    if (num != 2)
    {
        var rng = (Excel.Range)sheet.Range[sheet.Cells[3, 2], sheet.Cells[3, 27]];
        var wsValues = rng.Cells.Value;
        int scopeIndex = 0;
        int methodIndex = 0;
        int delimiterIndex = 0;
        int formatIndex = 0;
        int count = 0;

        foreach (var head in wsValues)
        {
            if (head == "*Scope")
                scopeIndex = count + 1;
            if (head == "Set Method")
                methodIndex = count + 1;
            if (head == "Delimiter")
                delimiterIndex = count + 1;
            if (head == "Format")
                formatIndex = count + 1;
        }
        array = new int[]{scopeIndex, methodIndex, delimiterIndex, formatIndex};
    }
    return array;
}

如何使用C＃Interop返回整数数组？

1 个答案: