前台代码:
<span style="font-size:14px;">var json = { width: w, height: h, category: canvas_category, name: canvas_json_name, description: canvas_description, border: canvas_border, lineWidth: defaultLineW, json: canvas_json };</span>
<span style="font-size:14px;">$.ajax({ url: "Canvas_panel.aspx", data: json, success: function (result) { if (result == "Exist") { alert("There is a same record in DB, you can't save it."); } else if (result == "Success") { alert('Save Success.'); } }, error: function (err) { alert(err); } });</span>
参数可以写成json格式,放到data中传输,也可以加到url中用queryString方式传输。
后台代码:
<span style="font-size:14px;">if (Request["name"] != null) { int width = int.Parse(Request["width"].ToString()); int height = int.Parse(Request["height"].ToString()); string name = Request["name"].ToString(); string json = Request["json"].ToString(); string sql = "select * from warehouse_model where code='" + name + "' and json='" + strJson + "'"; DataTable dtValidate = _dataAccess.GetTables(sql); if (dtValidate.Rows.Count > 0) { Response.Write("Exist"); Response.End(); } else { Response.Write("Success"); Response.End(); } }</span>
注意这里面的Reponse.End()方法,它的含义是强迫Web服务器停止执行更多的脚本,并发送当前结果,文件中剩余的内容将不被处理。如果不加上这个方法,前台Result中的结果将是整个页面。
时间: 2024-11-07 20:26:50