从客户端到服务器端的访问ID

问题描述

有两个日历，一个下拉列表和一个网格视图和按钮。现在我尝试在服务器端访问这些ID



我尝试过：

There is two calendars , one drop down and one grid view and button. Now i try to access these ID's on server side

What I have tried:

 <asp:DropDownList ID="regiondrop" runat="server" AutoPostBack="True" 

    onselectedindexchanged="regiondrop_SelectedIndexChanged">
    </asp:DropDownList>
 <input  ID="fromdate" value="dd/mm/yyyy" runat="server" clientidmode="static" />
  <input  ID="todate" value="dd/mm/yyyy" runat="server" clientidmode="static" />
<input type="button" id="search_data"    class="sear_btn"  value="Search Data"  />
and gridview  

现在我尝试在页面上显示网格视图



为此我试试这个

now i try to display grid view on page

for this i try this

<script type="text/javascript">
$(function () {

        var fromdate = $('[ID*=fromdate]').val();
        var todate = $('[ID*=todate]').val();
        var regiondrop = $('[ID*=regiondrop] option:selected')[0].value;
        var GridView1 = $('[ID*=GridView1]');
        var obj = {};
        obj.fromdate = todate ;
        obj.todate = todate ;
        obj.regiondrop = regiondrop ;
        obj.GridView1 =GridView1 ;
        Getdataa(obj);
        return false;

});
function Getdataa(obj) {
    //alert('1');
    $.ajax({
        type: "POST",
        url: "WebForm1.aspx/search_data",
        data: "{'fromdate':'" + fromdate + "','todate':'" + todate + "','regiondrop':'" + regiondrop + "','GridView1':'" + GridView1 + "'}",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        async: true,
        cache: false,
        success: function (result) {
            $("#GridView1").empty();
            if(data.d.length>0){
            $("#GridView1").append(
            "<tr><th>OName</th><th>RegNo</th>><th>Speed</th>");

            for(var i=0;i<data.d.length;i++){
            $("#GridView1").append("<tr><td>" +
            data.d[i].OName + "</td> <td>" +
            data.d[i].RegNo + "</td> <td>" +
            data.d[i].Speed + "</td></tr>");
               }
           }
        },
        error: function (error) {
            alert("error");

        }
    });
}

对于访问ID，我尝试获取ID，然后我在webmethod函数中传递这些ID这是

For access ID's i try to get ID and then i pass these ID in webmethod function like ths

[WebMethod]
   public static string search_data(DateTime fromdate, DateTime todate, string regiondrop)
   {

       try
       {

           DateTime frmdate =
          Convert.ToDateTime(fromdate.Value.Trim().Split('T')[0]);
           DateTime tdatee =
           Convert.ToDateTime(todate.Value.Trim().Split('T')[0]);
           string regionvalue = Convert.ToString(regiondrop.SelectedValue);
           TrackDataEntities1 ts = new TrackDataEntities1();

           // here dq code is like this var dq= and here i write LINQ query
           //i don't paste because of long query
           GridView1.DataSource = dq;
           GridView1.DataBind();

       }
       catch (Exception)
       {
           GridView1.Visible = false;
           Label4.Text = ("No Data");

       }

   }

当我试试这个节目时错误



错误2'System.DateTime'不包含'Value'的定义，也没有扩展方法'Value'接受类型'System.DateTime的第一个参数'可以找到（你错过了使用指令或程序集引用吗？）



错误3'System.DateTime'不包含'Value'的定义没有扩展方法'Value'接受类型'System.DateTime'的第一个参数可以找到（你是否缺少using指令或汇编引用？）



错误4'字符串'不包含'SelectedValue'的定义，并且没有扩展方法'SelectedValue'接受类型'string'的第一个参数可以找到（你是否缺少using指令或汇编引用？）



错误5非静态字段方法需要对象引用或者属性'chart_project.WebForm1.GridView1'



错误8非静态字段，方法或属性'chart_project.WebForm1.Label4需要对象引用'



任何解决方案

when i try this show errors

Error 2 'System.DateTime' does not contain a definition for 'Value' and no extension method 'Value' accepting a first argument of type 'System.DateTime' could be found (are you missing a using directive or an assembly reference?)

Error 3 'System.DateTime' does not contain a definition for 'Value' and no extension method 'Value' accepting a first argument of type 'System.DateTime' could be found (are you missing a using directive or an assembly reference?)

Error 4 'string' does not contain a definition for 'SelectedValue' and no extension method 'SelectedValue' accepting a first argument of type 'string' could be found (are you missing a using directive or an assembly reference?)

Error 5 An object reference is required for the non-static field, method, or property 'chart_project.WebForm1.GridView1'

Error 8 An object reference is required for the non-static field, method, or property 'chart_project.WebForm1.Label4'

any solution

推荐答案

这篇关于从客户端到服务器端的访问ID的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！