我正在创建一个程序,该程序使用SharePoint Web Services查询并向用户显示Sharepoint列表。我一次只能显示一列,所以我需要找到一个'默认列'或'显示列'来显示。我知道'Title'常用于许多内容类型,但我希望它对任何类型的自定义内容类型或列表都很健壮,所以我想找到一些查询列表来发现这个字段的方法。
例如:我在这里使用SharePoint Manager 2010并查看链接库(没有标题字段)但不知何故它知道列表项称为“http://google.com”。怎么推断这个? alt text http://www.adamburkepile.com/upload/splist.png
答案 0 :(得分:2)
看起来DisplayName背后有相当多的逻辑。这是我使用Reflector获得的代码:
public string DisplayName
{
get
{
if (!this.IsNew)
{
if ((!this.ParentList.AllowContentTypes && (this.ParentList.BaseType == SPBaseType.DocumentLibrary)) || (this.ParentList.AllowContentTypes && (this.ContentTypeId.IsNonDiscussionFolder || this.ContentTypeId.IsChildOf(SPBuiltInContentTypeId.Document))))
{
string str = (string) this.GetValue("BaseName", false);
if (!string.IsNullOrEmpty(str))
{
return SPHttpUtility.HtmlDecode(str);
}
}
SPField fieldByInternalName = this.Fields.GetFieldByInternalName("Title", false);
if (fieldByInternalName != null)
{
string fieldValueAsText = fieldByInternalName.GetFieldValueAsText(this.GetValue(fieldByInternalName, -1, false));
if (!string.IsNullOrEmpty(fieldValueAsText))
{
return fieldValueAsText;
}
}
if (this.ParentList.AllowContentTypes)
{
if (this.ContentTypeId.IsChildOf(SPBuiltInContentTypeId.Link))
{
SPFieldUrlValue value2 = new SPFieldUrlValue((string) this.GetValue("URL", false));
if (!string.IsNullOrEmpty(value2.Description))
{
return value2.Description;
}
if (!string.IsNullOrEmpty(value2.Url))
{
return value2.Url;
}
}
if (this.ContentTypeId.IsChildOf(SPBuiltInContentTypeId.Message))
{
Guid discussionTitleLookup = SPBuiltInFieldId.DiscussionTitleLookup;
SPField fld = this.Fields[discussionTitleLookup];
string str3 = fld.GetFieldValueAsText(this.GetValue(fld, -1, false));
if (!string.IsNullOrEmpty(str3))
{
return str3;
}
}
}
if (this.ParentList.BaseType != SPBaseType.Survey)
{
using (IEnumerator enumerator = this.Fields.GetEnumerator())
{
SPField field3;
string str5;
while (enumerator.MoveNext())
{
field3 = (SPField) enumerator.Current;
if (field3.GetFieldBoolValue("TitleField"))
{
goto Label_00C6;
}
}
goto Label_016F;
Label_00BB:
if (!(field3 is SPFieldMultiLineText))
{
return str5;
}
goto Label_00ED;
Label_00C6:
str5 = field3.GetFieldValueAsText(this.GetValue(field3, -1, false));
if (string.IsNullOrEmpty(str5))
{
goto Label_016F;
}
goto Label_00BB;
Label_00ED:
if (str5.Length <= 0xff)
{
return str5;
}
return str5.Substring(0, 0xff);
}
}
SPContext context2 = SPContext.Current;
if ((context2 == null) || (context2.FormContext.FormMode != SPControlMode.Edit))
{
return SPResource.GetString("ViewResponseTitle", new object[] { this.ID.ToString("N0", this.Web.Locale) });
}
return SPResource.GetString("ToolBarMenuRespondToSurvey", new object[0]);
}
SPContext current = SPContext.Current;
if (this.ParentList.BaseType != SPBaseType.Survey)
{
if ((current != null) && current.FormContext.IsNonDiscussionFolder)
{
return SPResource.GetString("ButtonTextNewFolder", new object[0]);
}
return SPResource.GetString("NewFormTitleNewItem", new object[0]);
}
return SPResource.GetString("ToolBarMenuRespondToSurvey", new object[0]);
Label_016F:
return SPResource.GetString("NoTitle", new object[0]);
}
}