用于ASP.NET下拉列表验证

嗨，你可以实现一个简单的JavaScript验证功能和按钮的OnClientClick方法调用它。下面是代码。aspx代码codeprelang="xml"spanclass="code-keyword"</spanspanclass="code-leadattribute"asp:DropDownList/spanspanclass="code-attribute"ID/spanspanclass="code-keyword"="/spanspanclass="code-keyword"dropDown1"/spanspanclass="code-attribute"runat/spanspanclass="code-keyword"="/spanspanclass="code-keyword"server"/spanspanclass="code-attribute"AutoPostBack/spanspanclass="code-keyword"="/spanspanclass="code-keyword"false"/spanspanclass="code-keyword">/spanspanclass="code-keyword"</spanspanclass="code-leadattribute"asp:ListItem/spanspanclass="code-attribute"Text/spanspanclass="code-keyword"="/spanspanclass="code-keyword"None"/spanspanclass="code-keyword"//spanspanclass="code-keyword">/spanspanclass="code-keyword"</spanspanclass="code-leadattribute"asp:ListItem/spanspanclass="code-attribute"Text/spanspanclass="code-keyword"="/spanspanclass="code-keyword"text1"/spanspanclass="code-keyword"//spanspanclass="code-keyword">/spanspanclass="code-keyword"</spanspanclass="code-leadattribute"asp:ListItem/spanspanclass="code-attribute"Text/spanspanclass="code-keyword"="/spanspanclass="code-keyword"text2"/spanspanclass="code-keyword"//spanspanclass="code-keyword">/spanspanclass="code-keyword"</spanspanclass="code-leadattribute"asp:ListItem/spanspanclass="code-attribute"Text/spanspanclass="code-keyword"="/spanspanclass="code-keyword"text3"/spanspanclass="code-keyword"//spanspanclass="code-keyword">/spanspanclass="code-keyword"</spanspanclass="code-keyword"//spanspanclass="code-leadattribute"asp:DropDownList/spanspanclass="code-keyword">/span spanclass="code-keyword"</spanspanclass="code-leadattribute"asp:Button/spanspanclass="code-attribute"ID/spanspanclass="code-keyword"="/spanspanclass="code-keyword"Button1"/spanspanclass="code-attribute"runat/spanspanclass="code-keyword"="/spanspanclass="code-keyword"server"/spanspanclass="code-attribute"Text/spanspanclass="code-keyword"="/spanspanclass="code-keyword"Submit"/spanspanclass="code-attribute"OnClientClick/spanspanclass="code-keyword"="/spanspanclass="code-keyword"javascript:returnValidateDropDown();"/spanspanclass="code-keyword"//spanspanclass="code-keyword">/span/pre/codeJavaScript代码{C}希望这将解决您的问题..
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