多文件上传器扩展检查不能一直工作 [英] Multi file uploader extension checking not working all the times

问题描述

下面是我的代码，在我选择的特定多文件上传器的文件中检查-b.doc我的问题是支持如果我选择

200-c.docx，201-C.docx， 202.wma和203.wma有相同的命令它说有效格式它有效并且有时不工作。



我尝试了什么：



i尝试上面的代码，但是当我多次执行时它不起作用

Below is my code which checks for -b.doc in my selected files of that particular multiple fileuploader my problem is suppos if i choose
200-c.docx,201-C.docx,202.wma and 203.wma with same order it is saying validformat it is working some times and not working some times.

What I have tried:

i tried above code but it is not working when i do it multiple times

推荐答案

应该尝试：

Should tried:

if (myfile.indexOf("-c.doc") != -1 || myfile.indexOf("-C.DOC") > != -1)

您可以使用小写和大写来测试文件名，但任何混合都会失败。

您需要转换测试前将文件名设置为小写或大写。

You test the filename against lowercase and against uppercase, but any mix will fail.
You need to convert the filename to lowercase or uppercase before testing.

var myfile = chkFile.value.ToLower();
var validExtension = "-c.doc";
label.innerText = myfile.EndsWith(validExtension) ? "Valid Format" : "Invalid Format";

更新：这是检查以上代码是否有效的测试：



C＃6 +版本

UPDATE: Here is a test to check that the above code works:

C#6+ version

var files = new List<string> { "aaa.mp3", "aaa-c.mp3", "aAa-c.DoC", "aAa-c.doc" };
var validExtension = "-c.doc";
foreach (var file in files)
{
    Console.WriteLine(

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