C# function to get the Content Type GUID from a Sharepoint list using web services

C# function to get the Content Type GUID from a Sharepoint list using web services

 

Simple helper function to get the GUID of a list from Sharepoint web services.

Note that in the code below I have a class level object pointing to the Lists.asmx web service called m_listService already established , but I have left in the code to establish this connection in the comments as an example.

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string GetListContentTypeGuid(string listName, string listID, string contentTypeName)         {             string defaultGuid = "";                            try             {                                    //ListsService.Lists listService = new ListsService.Lists();                 //listService.Credentials = System.Net.CredentialCache.DefaultCredentials;                    //XmlNode ndList = listService.GetList(fileInfo.m_listInfo.m_listName);                 //XmlNode ndVersion = ndList.Attributes["Version"];                    XmlNode contentTypes = m_listService.GetListContentTypes(listID, "anything");                    // Loop through the fields                 foreach (XmlNode node in contentTypes)                 {                     System.Diagnostics.Debug.Print(node.Attributes["Name"].Value.ToString());                     if (node.Attributes["Name"].Value.ToString() == contentTypeName)                     {                         defaultGuid = node.Attributes["ID"].Value.ToString();                         break;                     }                 }                                }             catch (Exception ex)             {                    throw new Exception("ERROR: Reading content types from target site.\r\n"                     + ex.Message + "\r\nDetails: " + ex.InnerException + "\r\n" +                     "Check the settings file to ensure that the list settings match the target site.", ex);                }             return defaultGuid;         }