Question

我有以下问题：

在方法1中，我得到一个字符串列表并将其传递给方法
在方法2中，我根据列表生成一个二维数组，并将列表进一步传递给方法3
在方法3中，我将2d数组转换为数据表

现在我想将数据表返回给方法1，但我不知道该怎么做。图为我的问题：

我的代码：

public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            Document doc = commandData.Application.ActiveUIDocument.Document;
            View activeView = commandData.View;

            if(activeView is ViewSchedule)
            {
                GetDimensions(activeView as ViewSchedule);
            }

            return Result.Succeeded;
        }

        public void GetDimensions(ViewSchedule schedule)
        {
            TableSectionData bodySelection = schedule.GetTableData().GetSectionData(SectionType.Body);
            int numberOfRows = bodySelection.NumberOfRows;
            int numberOfColumns = bodySelection.NumberOfColumns;
            string[,] values = new string[numberOfRows,numberOfColumns];
            FillArray(SectionType.Body, bodySelection, numberOfColumns, numberOfRows, values, schedule);
        }

        public void FillArray(SectionType secType, TableSectionData data, 
            int numberOfColumns, int numberOfRows, string[,] values, ViewSchedule schedule)
        {
            for (int r = data.FirstRowNumber; r < numberOfRows; r++)
            {
                for (int c = data.FirstColumnNumber; c < numberOfColumns; c++)
                {
                    values[r, c] = schedule.GetCellText(secType, r, c);
                }
            }

        }

现在我想将填充的数组返回Execute。

Answer 1

直接以这种方式传递它是不可能的。有三种选择：

make方法2获取结果并将其传回：

int Method2()
{
    var method3Result = Method3();
    return method3Result;
}

void Method1()
{
    var result = Method2(); //indirectly gets from Method3
}

提供共享状态：

public class Method3Result { public int Value { get; set; } }

public class X
{
    private Method3Result method3Result = new Method3Result();

    public void Method1()
    {
        Method2();

        //process result from method3Result
    }

    public void Method2()
    {
        Method3();
    }

    public void Method3()
    {
        method3Result.Value = 3;
    }
}

提供回调：

   public void Method1()
   {
        int method3Result;    
        Method2(value => method3Result = value);
    }

    public void Method2(Action<int> callback)
    {
        Method3(callback);
    }

    public void Method3(Action<int> callback)
    {
        callback(3);
    }
}

在您的情况下，选项1似乎很简单：

public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
    Document doc = commandData.Application.ActiveUIDocument.Document;
    View activeView = commandData.View;

    string[,] values = null;
    if (activeView is ViewSchedule)
    {
        values = GetDimensions(activeView as ViewSchedule);
    }

    return Result.Succeeded;
}

public string[,] GetDimensions(ViewSchedule schedule)
{
    //...
    return values;
}

此外，将FillArray更改为类似CreateArray并使其返回数组似乎更清晰：

public void FillArray(SectionType secType, TableSectionData data, int numberOfColumns, int numberOfRows, string[,] values, ViewSchedule schedule)
{
    string[,] values = new string[numberOfRows,numberOfColumns];
    for (int r = data.FirstRowNumber; r < numberOfRows; r++)
        {
            for (int c = data.FirstColumnNumber; c < numberOfColumns; c++)
            {
                values[r, c] = schedule.GetCellText(secType, r, c);
            }
        }

return values;
}

所以它更容易使用。

将结果从第三种方法返回到另一种方法

1 个答案: