Array.Length 不能分配给 - 它是只读的

Question

I am trying to include a script task in my ssis package that continuously checks a folder until a specified file is placed there, at which point it succeeds and goes on to the next step in the package. Here is the code I am using in the script task:

using System;
using System.Data;
using Microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
using System.IO;

namespace ST_6a16f1bd9a6548ddb82bbf41d5d5006f
{
    [Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute]

public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
{

    public void Main()
    {
        bool foundFile = false;
        string[] files = Directory.GetFiles(@"directory", "*abcd*");

        while (files.Length = 0)
            {
                foundFile = false;
            }

        if (files.Length > 0)
            { 
                foundFile = true;
            }

        if (foundFile == true)
            {
                Dts.TaskResult = (int)ScriptResults.Success;
            }
    }

    enum ScriptResults
    {
        Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
        Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
    };

}

} However, when I build this code, I get the error "Property or indexer 'Array.Length' cannot be assigned to -- it is read only".

Answer 1

Instead of

while (files.Length = 0)

Use

while (files.Length == 0)

You assigned 0 to files.Length instead of testing it.