访问父转发器DataItem属性
我有一个控件,它有一个Repeater,rptReferrals,它通过一个Entity对象列表,引用。 Referrals对象引用另一个名为Answers的表,它是为用户提交的Answers列表。 rptReferrals会将子转发器rptQuestionnaire绑定到我登录的人的问题列表,该列表未连接到它所绑定的Referrals对象。
这是aspx代码:
//some HTML for the referral object //some HTML for displaying questions and answers
后端代码:
protected void rptReferrals_OnItemDataBound(object sender, RepeaterItemEventArgs e) { if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { //THIS IS THE ITEM THAT HAS THE LIST OF ANSWERS I NEED var data = e.Item.DataItem as PatientReferral; var rptQuestionnaire = e.Item.FindControl("rptQuestionnaire") as Repeater; rptQuestionnaire.DataSource = QuestionList; rptQuestionnaire.DataBind(); //QuestionList is a list of questions populated on page load. // I can't bind to the property of data.Answers because not //all questions are answered. data.Answers is only a list of //the questions answered } } protected void rptQuestionnaire_OnItemDataBound(object sender, RepeaterItemEventArgs e) { if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { Need to access the data.Answers object from above. HOW???? } }
我遇到的问题是不需要问题列表,无论用户是否回答,我都需要显示所有问题。 但如果他们确实回答了这个问题,我需要显示答案,即rptReferrals附带的属性。
关于如何访问我的父转发器的dataitem的属性的任何想法? 此时我会回答任何问题。
您可以使用RepeaterItem
控件的.Parent
属性直到外部RepeaterItem
(以及它的DataItem
)。
看起来像这样会起作用:
protected void rptQuestionnaire_OnItemDataBound(object sender, RepeaterItemEventArgs e) { if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { Repeater currentRepeater = (Repeater)sender; // Note that you might only need one ".Parent" here. Or you might need // more, depends on your actual markup. var data = ((RepeaterItem)e.Item.Parent.Parent).DataItem as PatientReferral; // Now you have access to data.Answers from the parent Repeater } }