小编use*_*207的帖子

我尝试按照此页面操作:

http://melandri.net/2009/07/03/get-location-coordinates-using-google-maps/

但是GClientGeocoder()没有定义 - 有一个错误.

我已经在我的页面上使用google maps api了:

<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?key=<%=System.Web.Configuration.WebConfigurationManager.AppSettings["myGoogleKey"]%>&sensor=false"></script>

如何解决我的错误？

以下是我成功使用API​​的方法:

var map = new google.maps.Map(document.getElementById("map_canvas"),
        myOptions);

这是堆栈跟踪:

[FileLoadException: Could not load file or assembly 'Microsoft.Web.Infrastructure' or one of its dependencies. Access is denied.]

System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +39
System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks) +132
System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +144
System.Reflection.Assembly.Load(String assemblyString) +28
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +115

[ConfigurationErrorsException: …

我有这个：

<% if (ViewData["roots"] != null) {%>
       <%Html.DropDownList("roots"); %>
<%}%>

但这不起作用。如何查看ViewData是否存在？

这是我所拥有的：

for (i = 0; i < data.length; i++) {
                $("#myDropDownLisTId").find('tbody')  
                .append($('<option>').attr('value', data[i].id).attr('name', data[i].name)
                );               
            }

但是下拉列表始终保持不变。为什么这不起作用？数据变量具有漂亮的值。另外，我想在for循环之前清空下拉列表/该怎么做？

这是我在视图中的下拉列表：

<%= Html.DropDownList("myDropDownLisTId")%>

var lastArticles = from a in be.MyTable
                   where a.id == 1
                   join c in be.OtherTable on a.parent equals c.id
                   orderby a.timestamp descending
                   select new { a, cName = c.name};

我需要获得前5个元素.

我是这样做的

.Take(5)

但在linq声明中有没有办法呢？