Hi all,
i am new in json script.
am trying to convert the database table value into json using asp.net with c#.
here, am also send the response to asp.net client side.
but am not receiving any response from server side.
So please let me know where i made a mistake.
please find my code below,
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
<script type="text/javascript">
function testJson() {
$.ajax({
type: "POST",
url: "Default.aspx",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
var data = eval("(" + msg + ")");
var t = "<table border=1> <tr>" +
"<td> <strong>Name</strong></td> <td> " +
"<strong>Company</strong></td> <td> " +
"<strong>Address</strong></td> <td> " +
"<strong>Phone</strong></td> <td> " +
"<strong>Country</strong></td> </tr> ";
// jQuery.each(data, function(rec) {
// t = t + " <tr> <td> " + this.Name + "</td> <td> " +
// this.Company + "</td> <td> " + this.Address +
// "</td> <td> " + this.Phone +
// "</td> <td> " + this.Country +
// "</td> </tr> ";
// });
t = t + " </table> ";
$("#jsonDiv").html(t);
},
error: function(msg) {
}
});
};
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<div id="jsonDiv">
</div>
</div>
</form>
</body>
</html>
Code behind:
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Newtonsoft.Json;
using System.Text;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string result=DataTableToJsonWithStringBuilder(getData());
Response.Write(result);
}
public DataTable getData()
{
DataTable dt = new DataTable();
SqlConnection con = new SqlConnection(@"Data Source=abc\SQL2012;Initial Catalog=test;User ID=sa;Password=test@123");
con.Open();
SqlCommand cmd = new SqlCommand("select menuid,caption,ParentID,HasChild,isactive from menu", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(dt);
con.Close();
return dt;
}
public string DataTableToJsonWithStringBuilder(DataTable table)
{
var jsonString = new StringBuilder();
if (table.Rows.Count > 0)
{
jsonString.Append("[");
for (int i = 0; i < table.Rows.Count; i++)
{
jsonString.Append("{");
for (int j = 0; j < table.Columns.Count; j++)
{
if (j < table.Columns.Count - 1)
{
jsonString.Append("\"" + table.Columns[j].ColumnName.ToString()
+ "\":" + "\""
+ table.Rows[i][j].ToString() + "\",");
}
else if (j == table.Columns.Count - 1)
{
jsonString.Append("\"" + table.Columns[j].ColumnName.ToString()
+ "\":" + "\""
+ table.Rows[i][j].ToString() + "\"");
}
}
if (i == table.Rows.Count - 1)
{
jsonString.Append("}");
}
else
{
jsonString.Append("},");
}
}
jsonString.Append("]");
}
return jsonString.ToString();
}
}
thanks in advance..
