我在我的代码中使用 ugc 条件语句，equals 条件工作正常，但是如何使用其他条件运算符，如 ">" "<" 和 "Not Equals"。
<%
HttpContext.Current.Items["CommentCount"] = 0;
%>
<ugc:Choose runat="server">
<ugc:When test="ugcItemStats.numberOfComments > CommentCount" runat="server">
HTML1
</ugc:When>
<ugc:Otherwise runat="server">
HTML2
</ugc:Otherwise>
</ugc:Choose>
应该使用什么运算符，如果 numberofComments 大于 0，我尝试过这种方式，也尝试过“notequals”而不是“>”，但它不起作用。
请建议
Tridion ug:when 仅适用于“equal”和“==”，如果您想使用其他运算符，则必须为此创建其他客户控件。
我已经创建了，我希望它可以与 "==,>=",<=,>,<,!=" 运算符一起使用。
它在我的项目中工作。
using System;
using System.ComponentModel;
using System.Globalization;
using System.Reflection;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.UI;
namespace Tridion.ContentDelivery.UGC.Web.UI
{
[DefaultProperty("Test"), ToolboxData("<{0}:WhenCond runat=server></{0}:WhenCond>"), ParseChildren(ChildrenAsProperties = false)]
public class WhenCond : BaseUGCServerControl
{
private string test;
private static Regex pattern = new Regex(@"\.");
protected virtual bool Condition()
{
if (this.test == null)
{
return false;
}
string[] sep = new string[] { "==", "<", ">", "<=", ">=" ,"!="};
string[] testArray = test.Split(sep, StringSplitOptions.None);
if (testArray.Length == 2)
{
object value1 = EvaluateVariable(testArray[0].Trim(), HttpContext.Current);
object value2 = EvaluateVariable(testArray[1].Trim(), HttpContext.Current);
if (value1 != null && value2 != null)
{
if (isNumeric(value1.ToString(), NumberStyles.Number) && isNumeric(value2.ToString(), NumberStyles.Number))
{
return NumericCondition(double.Parse(value1.ToString()), double.Parse(value2.ToString()), GetSepartor());
}
else
{
return AlphaNumericCondition(value1.ToString(), value2.ToString(), GetSepartor());
}
}
else
{
return false;
}
}
return false;
}
public static object EvaluateVariable(string varProperty, HttpContext usedContext)
{
if (!string.IsNullOrEmpty(varProperty))
{
string[] strArray = pattern.Split(varProperty);
if (!string.IsNullOrEmpty(strArray[0]))
{
object obj2 = usedContext.Items[strArray[0]];
if (obj2 != null)
{
object obj3 = obj2;
for (int i = 1; i < strArray.Length; i++)
{
if (obj3 != null)
{
string str = strArray[i];
if (!string.IsNullOrEmpty(str))
{
string str2 = str.Substring(0, 1);
string str3 = str.Substring(1);
string name = str2.ToUpper() + str3;
PropertyInfo property = obj3.GetType().GetProperty(name);
if (property != null)
{
obj3 = property.GetValue(obj3, null);
}
}
}
}
return obj3;
}
}
}
return null;
}
public bool isNumeric(string val, System.Globalization.NumberStyles NumberStyle)
{
Double result;
return Double.TryParse(val, NumberStyle, System.Globalization.CultureInfo.CurrentCulture, out result);
}
private string GetSepartor()
{
string sept = string.Empty;
sept = this.test.Contains("==") ? "==" : string.Empty;
sept = string.IsNullOrEmpty(sept) ?(this.test.Contains(">") ? ">" : string.Empty):sept;
sept = string.IsNullOrEmpty(sept) ? (this.test.Contains("<") ? "<" : string.Empty) : sept;
sept = string.IsNullOrEmpty(sept) ?(this.test.Contains(">=") ? ">=" : string.Empty):sept;
sept = string.IsNullOrEmpty(sept) ?(this.test.Contains("<=") ? "<=" : string.Empty):sept;
sept = string.IsNullOrEmpty(sept) ? (this.test.Contains("!=") ? "!=" : string.Empty) : sept;
return sept;
}
private bool NumericCondition(double value1, double value2, string sept)
{
bool returnFlag = false;
switch (sept)
{
case "==":
returnFlag = (value1 == value2);
break;
case ">":
returnFlag = (value1 > value2);
break;
case "<":
returnFlag = (value1 < value2);
break;
case ">=":
returnFlag = (value1 >= value2);
break;
case "<=":
returnFlag = (value1 <= value2);
break;
case "!=":
returnFlag = (value1 != value2);
break;
}
return returnFlag;
}
private bool AlphaNumericCondition(string value1, string value2, string sept)
{
bool returnFlag = false;
switch (sept)
{
case "==":
returnFlag = (value1.CompareTo(value2) == 0);
break;
case "!=":
returnFlag = (!value1.Equals(value2));
break;
case ">":
returnFlag = (value1.CompareTo(value2) > 0);
break;
case "<":
returnFlag = (value1.CompareTo(value2) < 0);
break;
}
return returnFlag;
}
protected override void Render(HtmlTextWriter writer)
{
if ((HttpContext.Current != null) && (HttpContext.Current.Application != null))
{
Control parent = this.Parent;
if (!(parent is Choose))
{
throw new InvalidOperationException("WhenCond control must have a Tridion Web UI Choose server control as parent!!!");
}
Choose choose = (Choose)parent;
if (!choose.AlreadyMatchedCondition() && this.Condition())
{
choose.MatchedCondition();
this.RenderChildren(writer);
}
}
}
[Category("Appearance"), DefaultValue(""), Bindable(true)]
public string Test
{
get
{
return this.test;
}
set
{
this.test = value;
}
}
}
}
在 aspx 页面中的实现
<%@ Register assembly="Tridion.Custom.Web.UI" namespace="Tridion.ContentDelivery.UGC.Web.UI" tagprefix="cc1" %>
<ugc:Choose runat="server">
<cc1:WhenCond test="ugcItemStats.numberOfComments > CommentCount" runat="server">
HTML1
</cc1:WhenCond>
<ugc:Otherwise runat="server">
HTML2
</ugc:Otherwise>
</ugc:Choose>
如果您遇到任何问题，请告诉我。
据我所知，When条件仅支持两个条件==和equals。因此，您可能必须使用这些来解决您的测试条件（两者相同）。
有人可以验证或确认以上是真的吗？
您是否尝试过使用>？这通常可以解决类似的问题，例如 XPath。
抱歉，When标签目前仅支持“==”或“equals”。