数字后修剪字符串

Question

我需要调整我的代码,以便它会在数字后修剪网址.例如,我希望删除List = 36后的所有内容.字母和特殊字符是唯一可以跟随列表编号的潜在字符.所以我只想在列表编号后面读取字母或特殊字符时修剪网址.谢谢.

提交时捕获的当前URL的示例

https://portal.test/sites/test/testabc/Lists/TEST/DispFormSort.aspx?List=36caab7e%2D2234%2D4981%2D8225%%2Easpx

https://portal.test/sites/test/testabc/Lists/TEST/DispFormSort.aspx?List=36,http://portal.test/testabc/Lists/TEST/AllItems.aspx

我希望在提交时捕获的网址:

https://portal.test.com/sites/test/testabc/Lists/RFC/DispFormSort.aspx?List=36

我当前捕获url的方法的代码:

    public static string GenerateShortUrl(SPList list, int itemId)
    {
        try
        {
            var item = list.GetItemById(itemId);
            var itemUrl = string.Empty;

            if (item.File == null)
                itemUrl = SPContext.Current.Web.Url + "/" + list.Forms[PAGETYPE.PAGE_DISPLAYFORM].Url + "?ID=" + item.ID;
            else
                itemUrl = SPContext.Current.Web.Url + "/" + item.Url;

            var generatedShortedUrl = GetShortUrl(itemUrl);

            return generatedShortedUrl;
        }
        catch (Exception ex)
        {
            Utilities.WriteError(ex.ToString());

            throw new SPException("An error occurred while attempting to shorten a URL.", ex);
        }
    }

---

     private static string GetShortUrl(string itemUrl)
        {
            var shortId = Utilities.GenerateHash(itemUrl);
            var shortenerUrl = string.Empty;

            SPSecurity.RunWithElevatedPrivileges(delegate()
            {
                    var farm = SPAdministrationWebApplication.Local;
                    using (var site = farm.Sites[0])
                    {
                        using (var web = site.RootWeb)
                        {
                            if (!web.Properties.ContainsKey("LiebrandUrlShortener"))
                                throw new SPException(SPUtility.GetLocalizedString("$Resources:liebrandurlshortener,CannotFindUrl", "liebrandurlshortener", web.Language));

                            var urlList = web.Lists[SPUtility.GetLocalizedString("$Resources:liebrandurlshortener,StorageName", "liebrandurlshortener", web.Language)];

                            var query = new SPQuery();
                            query.Query = "<Where><Eq><FieldRef Name='Title'/><Value Type='Text'>" + shortId + "</Value></Eq></Where>";

                            var items = urlList.GetItems(query);
                            if (items.Count == 0)
                            {

                                var urlListItem = urlList.Items.Add();
                                urlListItem["Title"] = shortId;
                                urlListItem["RedirectTo"] = itemUrl;

                                web.AllowUnsafeUpdates = true;
                                urlListItem.Update();
                                web.AllowUnsafeUpdates = false;

                            }

                            shortenerUrl = web.Properties["LiebrandUrlShortener"];
                        }
                    }
            });

            return shortenerUrl + "/" + shortId;
        }

        public static string GenerateShortUrl(string longUrl)
        {
            return GetShortUrl(longUrl);
        }



    }
}

Answer 1

您可以使用Regex捕获所有内容,直到？List = [number].

你可以使用这个正则表达式:

Regex.Match(str, @"^.*\?List=\d+").Value