为什么MultipleLookupField setter不起作用，我该怎么做才能使它起作用? [英] Why MultipleLookupField setter is not working and what can i do to make it work?

问题描述

有人可以确认他们有同样的问题吗?我在SP2013，VS2013上使用即时通讯，在Microsoft.SharePoint v15.0.0.0上也有参考

can someone confrim they have the same problem?  Im with SP2013, VS2013 and i have a reference on Microsoft.SharePoint v15.0.0.0

我运行以下简化代码:

LookupField lf = new LookupField();
MultipleLookupField mlf = new MultipleLookupField();

lf.Value = new SPFieldLookupValueCollection("1;#1;#2;#2;#3;#3");
mlf.Value = new SPFieldLookupValueCollection("1;#1;#2;#2;#3;#3");

我得到这个结果:

为什么mlf没有设置值，有人知道如何设置值吗?

Why mlf is not setting the value, do someone have an idea how to set the value?

https://msdn.microsoft.com/en-us /library/microsoft.sharepoint.webcontrols.multiplelookupfield.value.aspx

获取或设置查找字段的值.

Gets or sets the values of the lookup fields.

推荐答案

我认为 将值设置为 直接 MultipleLookupField .

I think it is not the correct way to set value to MultipleLookupField directly.

要正确使用 MultipleLookupField ，我们可以执行以下操作.

To use MultipleLookupField correctly, we can do as below.

protected void Page_Load(object sender, EventArgs e)
{
	if(!Page.IsPostBack)
	{
		SPList list = SPContext.Current.Web.Lists["CustomList"];
		MultipleLookupField mlf = new MultipleLookupField();
		mlf.ControlMode = SPControlMode.Edit;
		mlf.FieldName = "Attendees";
		mlf.ItemId = list.Items[1].ID;
		mlf.ListId = list.ID;
		mlf.ID = "MultipleLookupField4";
		this.Controls.Add(mlf);
	}
}

如果必须为 MultipleLookupField 赋值，则可以选择另一种前端代码，例如html和JS.

If you have to assign value to MultipleLookupField, you can choose another way of front-end code like html and JS.

最诚挚的问候，

李刘

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