SSIS Script task to check if file exists in folder or not

问题

I want to check to see if a file exists in a particular folder from SSIS. How can I accomplish this?

回答1:

Variables:

folder - string - C::\Temp\

file - string - 1.txt

fileExists - boolean - False

public void Main()
{
    string folder = Dts.Variables["User::folder"].Value.ToString();     //@"C:\temp\";
    string file = Dts.Variables["User::file"].Value.ToString();         //"a.txt";
    string fullPath = string.Format(@"{0}\{1}", folder, file);

    Dts.Variables["User::fileExists"].Value = File.Exists(fullPath);

    Dts.TaskResult = (int)ScriptResults.Success;
}

回答2:

You can use Foreach Loop Container and simply place all your items into it. It will be executed if file exists and won't if not. Very simple :)

回答3:

As an alternative to having an "out" variable, you could also Change the Dts.TaskResult based on whether or not the file exists. The snippet below fails the script task if the file doesn't exist. (It also creates a log entry if logging is enabled.)

public void Main()
{
    string fileName = Dts.Variables["User::sourcePath"].Value.ToString() + Dts.Variables["User::fileName"].Value.ToString();

    if (File.Exists(fileName))
    {
        Dts.TaskResult = (int)ScriptResults.Success;
    } 
    else 
    {
        Dts.Log(string.Format("File {0} was not found.",fileName),0,null);
        Dts.TaskResult = (int)ScriptResults.Failure;
    }

}

回答4:

There are no native tasks inside SSIS that can do this check but you can accomplish this using a Script Task but i suggest you check the following links for simple steps required to achieve that.

http://www.bidn.com/blogs/DevinKnight/ssis/76/does-file-exist-check-in-ssis

http://sqlmag.com/sql-server-integration-services/simple-effective-way-tell-whether-file-exists-using-ssis-package

来源：https://stackoverflow.com/questions/17568554/ssis-script-task-to-check-if-file-exists-in-folder-or-not

标签

file

ssis

file-exists