Dialog.aspx

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<%@ Page language="c#"%>
<script language="C#" runat="server">

// 定义消息内容
private string NoFileMessage = "请选择上传文件";
private string UploadSuccessMessage = "上传成功";
private string NoImagesMessage = "无文件";
private string NoFolderSpecifiedMessage = "文件夹不存在";
private string NoFileToDeleteMessage = "未删除文件";
private string InvalidFileTypeMessage = "无效的文件格式";
private string[] AcceptedFileTypes = new string[] {"jpg","jpeg","jpe","gif","bmp","png"};

// 定义变量
private bool	UploadIsEnabled = true;
private bool	DeleteIsEnabled = true;
private string	DefaultImageFolder = "image";

//定义处理程序
private void Page_Load(object sender, System.EventArgs e) 
{
	string isframe = "" + Request["frame"];
	if (isframe != "") {
		MainPage.Visible = true;
		iframePanel.Visible = false;
	
		string rif = "" + Request["rif"];
		string cif = "" + Request["cif"];	

		if (cif != "" && rif != "")
		{
			RootImagesFolder.Value = rif;
			CurrentImagesFolder.Value = cif;
		} 
		else
		{
			RootImagesFolder.Value = DefaultImageFolder;
			CurrentImagesFolder.Value = DefaultImageFolder;	
		}

		UploadPanel.Visible = UploadIsEnabled;
		DeleteImage.Visible = DeleteIsEnabled;

		string FileErrorMessage = "";
		string ValidationString = ".*(";
		//[\.jpg]|[\.jpeg]|[\.jpe]|[\.gif]|[\.bmp]|[\.png])$"
		for (int i=0;i<AcceptedFileTypes.Length; i++)
		{
			ValidationString += "[\\." + AcceptedFileTypes[i] + "]";
			if (i < (AcceptedFileTypes.Length-1)) ValidationString += "|";
			FileErrorMessage += AcceptedFileTypes[i];
			if (i < (AcceptedFileTypes.Length-1)) FileErrorMessage += ", ";
		}
		FileValidator.ValidationExpression = ValidationString+")$";
		FileValidator.ErrorMessage=FileErrorMessage;

		if (!IsPostBack)
		{
			DisplayImages();
		}
	}