Question

我创建了一个内容类型TypeA，它具有基本ListB的查找字段。然后我创建一个使用TypeA的ListA。一切都是以编程方式创建的。

当ListA的“添加新项目”模式应该加载时抛出异常。它只发生在ListB中有项目的情况下。如果ListB为空，listA的'添加新项'模态加载，并且ListB的查找字段正确显示(None)

堆栈跟踪：

System.ArgumentException: Value does not fall within the expected range.

at Microsoft.SharePoint.SPFieldMap.GetColumnNumber(String strFieldName, Boolean bThrow)
at Microsoft.SharePoint.SPListItemCollection.GetColumnNumber(String groupName, Boolean bThrowException)
at Microsoft.SharePoint.SPListItemCollection.GetRawValue(String fieldname, Int32 iIndex, Boolean bThrow)
at Microsoft.SharePoint.SPListItem.GetValue(SPField fld, Int32 columnNumber, Boolean bRaw, Boolean bThrowException)
at Microsoft.SharePoint.SPListItem.GetValue(String strName, Boolean bThrowException)
at Microsoft.SharePoint.SPListItem.get_Item(String fieldName)
at Microsoft.SharePoint.WebControls.LookupField.get_DataSource()
at Microsoft.SharePoint.WebControls.LookupField.CreateChildControls()
at System.Web.UI.Control.EnsureChildControls()
at Microsoft.SharePoint.WebControls.BaseFieldControl.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

我用来创建内容类型，列表和查找字段的方法：

    private SPContentType createContentType(SPSite site, string typeName, string groupName, string parentTypeName, string[] fields) {
        try {
            SPContentType testExist = site.RootWeb.ContentTypes[typeName];
            if (testExist != null)
                return testExist;
        }
        catch { }

        SPContentType parentType = site.RootWeb.ContentTypes[parentTypeName];

        SPContentType contentType = new SPContentType(parentType, site.RootWeb.ContentTypes, typeName);
        contentType.Group = groupName;

        foreach (string field in fields) {
            contentType.FieldLinks.Add(new SPFieldLink(site.RootWeb.GetField(field)));
        }
        contentType.FieldLinks["Title"].Required = false;
        contentType.FieldLinks["Title"].Hidden = true;

        site.RootWeb.ContentTypes.Add(contentType);
        contentType.Update();
        return contentType;
    }

    public SPFieldLookup createLookupField(string fieldName, string groupName, Guid listGuid, string lookupField, bool allowMultipleValues, bool isRequired) {
        if (site.RootWeb.Fields.ContainsField(fieldName))
            return null;
        string internalName = site.RootWeb.Fields.AddLookup(fieldName, listGuid, isRequired);
        SPFieldLookup lookup = site.RootWeb.Fields.GetFieldByInternalName(internalName) as SPFieldLookup;
        lookup.AllowMultipleValues = allowMultipleValues;
        lookup.LookupField = lookupField;
        lookup.Group = groupName;
        lookup.Update();
        return lookup;
    }

    public SPList createList(string listName, string description, SPContentType contentType) {

        if (web.Lists.TryGetList(listName) != null)
            web.Lists[listName].Delete();
        Guid newListGuid = web.Lists.Add(listName, description, SPListTemplateType.GenericList);
        SPList newList = web.Lists[newListGuid];
        newList.OnQuickLaunch = true;
        newList.Update();

        newList.ContentTypesEnabled = true;
        SPContentType newType = newList.ContentTypes.Add(contentType);
        newList.Update();
        newList.ContentTypes["Item"].Delete();
        newList.Update();
        newList.Fields["Title"].Required = false;
        newList.Fields["Title"].Hidden = true;
        newList.Fields["Title"].Update();

        SPView view = newList.DefaultView;
        foreach (SPField field in newType.Fields) {
            view.ViewFields.Add(field);
        }
        view.ViewFields.Delete("Title");
        view.ViewFields.Delete("LinkTitle");
        view.ViewFields.Delete("ContentType");
        view.Update();

        return newList;
    }

示例

SPContentType typeB = createContentType(site, "Type B", "My Group", "Item", new string[] {"Salary"});
SPList listB = createList("List B", "my list b", typeB);
SPFieldLookup lookupB = createLookupField("B", "My Group", listB.ID, "Salary", false, false);
SPContentType typeA = createContentType(site, "Type A", "My Group", "Item", new string[] {"Name", "B"});
SPList listA = createList("List A", "my list a", typeA);

Answer 1

SPFieldLookup.LookupField属性需要字段的内部名称。

解决方案是进行以下更改（在示例中）：

SPFieldLookup lookupB = createLookupField("B", "My Group", listB.ID, listB.Fields["Salary"].InternalName, false, false);

以编程方式生成的查找字段导致“System.ArgumentException：Value不在预期范围内”创建新项目时

1 个答案: