在 SharePoint 图片库中自定义上传文件功能 [英] Customizing upload file functionality in SharePoint picture library

问题描述

谁能帮我，我想自定义上传功能，我想在其中验证上传的图像类型到图片库

Can anyone help me ,I want to customize upload functionality in which i want to validate the uploaded image type to the picture library

在哪里可以设置我的脚本??任何人都可以建议???

where can i set my script ?? Any one can advise ???

推荐答案

您可能会使用 ItemAdding.在 ItemAdding 事件方法中，只需在成功上传到库之前检查文档的扩展名.如果文档无效，则通过错误消息

You might be Use ItemAdding. In ItemAdding Event Method just check extension of the Document before successfully uploaded to the Library.if unvalid document than through Error message

你的代码是这样的:

   protected string[] ValidExtensions = new string[] { "png", "jpeg", "gif"};

   public override void ItemAdding(SPItemEventProperties properties)
    {
        string strFileExtension = Path.GetExtension(properties.AfterUrl);

        bool isValidExtension = false;

        string strValidFileTypes = string.Empty;

        using (SPWeb web = properties.OpenWeb())
        {

                foreach (string strValidExt in ValidExtensions)
                {
                    if (strFileExtension.ToLower().EndsWith(strValidExt.ToLower()))
                    {
                        isValidExtension = true;
                    }
                    strValidFileTypes += (string.IsNullOrEmpty(strValidFileTypes) ? "" : ", ") + strValidExt;
                }

      // Here i am going to check is this validate or not if not than redirect to the 
      //Error Message Page. 
                if (!isValidExtension)
                {
                    properties.Status = SPEventReceiverStatus.CancelWithRedirectUrl;
                    properties.RedirectUrl = properties.WebUrl + "/_layouts/error.aspx?ErrorText=" + "Only " + strValidFileTypes + " extenstions are allowed";

                }

        }

    }

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