JS调用ashx文件传递中文参数取不到值的解决方案

实现在text中输入数据，areatext里动态搜索

 

View Code

        <th  class= " t_r ">
                                            请选择公司：
                                        </th>
                                        <td width= " 89% "  class= " kuang1 ">
                                            <asp:TextBox ID= " txtKeyWord " runat= " server "></asp:TextBox>
                                            <span  class= " red ">*</span><br />
                                            <select id= " txtCompanyList " multiple= " multiple " name= " D1 " onclick= " CompanySelect() "
                                                style= " width: 380px; height: 119px ">
                                                <option></option>
                                            </select>
                                        </td>

 

JS:

 

View Code

function BindCompanyList() {
             var comapyname = $("#txtKeyWord").val();
            $("#txtCompanyList").html("");
            $.getJSON("GetCompanyList.ashx?companyname=" + escape(comapyname),  null,  function(json) {
                 if (json !=  null) {
                    $.each(json,  function(i) { $("#txtCompanyList").append($("<option></option>").val(json[i].id).html(json[i].companyname)) });
                }
            });
        }
         function CompanySelect() {
             var Obj = document.getElementById("txtCompanyList");
             if (document.getElementById("txtCompanyList").options.length != 0) {
                document.getElementById("txtKeyWord").value = Obj.options[Obj.selectedIndex].text;
            }
        }

 

ASHX:

 

View Code

        public  void ProcessRequest(HttpContext context)
        {
            StringBuilder sb= new StringBuilder();
             if (context.Request.Params["companyname"] !=  null)
            {
                DataTable dt =  null;
                string strcompanyname = context.Server.HtmlDecode(context.Request.Params["companyname"].ToString());
                 if (strcompanyname!="")
                {
                    dt =  new BLL.CZL_CompanyInfo().GetList(" companyname like '%" + strcompanyname + "%'").Tables[0];
                }
                 else
                {
                    dt =  new BLL.CZL_CompanyInfo().GetAllList().Tables[0];
                }
                 if (dt ==  null || dt.Rows.Count == 0)
                {
                     return;
                }
                 else
                {
                    sb.Append("[");
                     for ( int i = 0; i < dt.Rows.Count; i++)
                    {
                         // 返回JOSN数据
                        sb.Append("{\"id\":\"" + dt.Rows[i]["id"].ToString() + "\",\"companyname\":\"" +Common.ProductAbout.ReturnStr(dt.Rows[i]["companyname"].ToString()) + "\"},");
                    }
                    sb.Remove(sb.Length - 1, 1);
                    sb.Append("]");
                }
            }
            context.Response.ContentType = "application/json";
            context.Response.ContentEncoding = Encoding.UTF8;
            context.Response.Write(sb.ToString());
        }

注意传递值的时候，js里用escape()对参数进行编码

取得的时候，.cs中用context.Server.HtmlDecode()进行对参数的解密