首页 > 代码库 > 【Jqurey EasyUI】----DataGrid数据绑定，以及增、删、改(SQL)
【Jqurey EasyUI】----DataGrid数据绑定，以及增、删、改(SQL)
也懒得打其它字了，直接进入主题吧
1.首先，数据表Rex_Test
| ID | int | 自增 |
| tName | varchar(10) | 姓名 |
| tEmail | varchar(80) | 邮箱 |
2.至于代码里的Jqurey EasyUI包就直接去官网下载吧，当然其它地方也行，这里就不多做说明了。
3.前台显示页面
Default.aspx
<span style="font-size:14px;"><head>
<title>myWeb</title>
<link rel="stylesheet" type="text/css" href="jquery-easyui-1.3.6/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="jquery-easyui-1.3.6/themes/icon.css">
<link rel="stylesheet" type="text/css" href="demo.css">
<script type="text/javascript" src="jquery-easyui-1.3.6/jquery.min.js"></script>
<script type="text/javascript" src="jquery-easyui-1.3.6/jquery.easyui.min.js"></script>
</head>
<body >
<table id="dg" class="easyui-datagrid" style="width: 700px; height: 300px" data-options="rownumbers:true,onClickRow:ClickRow,singleSelect:true,border:false,pagination:true,url:'Handler3.ashx'">
<thead>
<tr>
<th data-options="field:'ID',width:100">
ID
</th>
<th data-options="field:'tName',width:100">
姓名
</th>
<th data-options="field:'tEmail',width:100">
邮箱
</th>
</tr>
</thead>
</table>
<div id="Div1" class="easyui-panel" title="form Fields" style="width: 1000px; height: 180px;
float: left;">
<table>
<tr>
<td>
姓名:
</td>
<td>
<input id="n" class="easyui-validatebox" type="text" name="name" data-options="required:true" />
</td>
</tr>
<tr>
<td>
邮箱:
</td>
<td>
<input id="pr" class="easyui-validatebox" type="text" name="price" data-options="required:true" />
</td>
</tr>
<tr>
<td>
查询：
</td>
<td>
<input id="sear" class="easyui-validatebox" type="text" name="price" data-options="required:true" />
</td>
</tr>
<tr>
<td>
<a href="#" class="easyui-linkbutton" data-options="iconCls:'icon-add'" onclick="add()">
Add</a>
</td>
<td>
<a href="#r" class="easyui-linkbutton" data-options="iconCls:'icon-ok'" onclick="refresh()">Refresh</a>
<a href="#r" class="easyui-linkbutton" data-options="iconCls:'icon-ok'" onclick="del()">Delete</a>
</td>
</tr>
</table>
</div>
<ul id="tt" class="easyui-tree">
</ul>
<script type="text/javascript">
$(document).ready(function ()
{
$.ajax({
url: "Handler3.ashx",
type: "get",
dataType: "json",
error: function (request, message, ex)
{
alert(message + request + ex);
},
success: function (returnValue)
{
$("#tt").tree("loadData", returnValue);
}
})
});
function searchs()
{
$.ajax({
url: "refresh.ashx",
type: "post",
data: "fac=" + $("#sear").val(),
// data: "olditemid=" + $("#dg").datagrid("getSelected").ItemID + "&itemid=" + $("#ii").val(),
error: function (request, message, ex)
{
alert(message + request + ex);
},
success: function (returnValue)
{
alert(returnValue);
$('#dg').datagrid('reload');
}
})
}
function add()
{
$.ajax({
url: "add.ashx",
type: "get",
data: "name=" + $("#n").val() + "&email=" + $("#pr").val(),
error: function (request, message, ex)
{
alert(message + request + ex);
},
success: function (returnValue)
{
alert(returnValue);
$('#dg').datagrid('reload');
}
})
}
function del()
{
$.ajax({
url: "del.ashx",
type: "get",
data: "id=" + $("#dg").datagrid("getSelected").ID,
error: function (request, message, ex)
{
alert(message + request + ex);
},
success: function (returnValue)
{
//
alert(returnValue);
$('#dg').datagrid('reload');
}
})
}
function ClickRow(rowIndex, rowData)
{
// alert('这是Name:' + rowData.Name + '这个是ID:' + rowData.ID);
if (rowData) {
//document.getElementById("ii").value = rowData.ID;
document.getElementById("n").value = rowData.tName;
document.getElementById("pr").value = rowData.tEmail;
}
}
function refresh()
{
$.ajax({
url: "refresh.ashx",
type: "get",
data: "id=" + $("#dg").datagrid("getSelected").ID + "&name=" + $("#n").val() + "&email=" + $("#pr").val(),
// data: "olditemid=" + $("#dg").datagrid("getSelected").ItemID + "&itemid=" + $("#ii").val(),
error: function (request, message, ex)
{
alert(message + request + ex);
},
success: function (returnValue)
{
alert(returnValue);
$('#dg').datagrid('reload');
}
})
}
</script>
</body>
</html></span>4. Handler3.ashx（初始绑定）
<span style="font-size:14px;"><%@ WebHandler Language="C#" Class="Handler3" %>
using System;
using System.Web;
using System.Data;
using System.Data.SqlClient;
using System.Text;
using System.IO;
public class Handler3 : IHttpHandler {
public void ProcessRequest(HttpContext context)
{
Query(context);
}
public void Query(HttpContext context)
{
//调用B层的方法从而获取数据库的Dataset
SqlHelp sqla = new SqlHelp();
string strfaca = "select * from Rex_Test";
DataSet ds = sqla.GetDataSet(strfaca);
//将Dataset转化为Datable
DataTable dt = ds.Tables[0];
int count = dt.Rows.Count;
string strJson = Dataset2Json(ds, count);//DataSet数据转化为Json数据
context.Response.Write(strJson);//返回给前台页面
context.Response.End();
}
/// <summary>
/// DataSet转换成Json格式
/// </summary>
/// <paramname="ds">DataSet</param>
///<returns></returns>
public static string Dataset2Json(DataSet ds, int total = -1)
{
StringBuilder json = new StringBuilder();
foreach (DataTable dt in ds.Tables)
{
//{"total":5,"rows":[
json.Append("{\"total\":");
if (total == -1)
{
json.Append(dt.Rows.Count);
}
else
{
json.Append(total);
}
json.Append(",\"rows\":[");
json.Append(DataTable2Json(dt));
json.Append("]}");
}
return json.ToString();
}
/// <summary>
/// dataTable转换成Json格式
/// </summary>
/// <paramname="dt"></param>
///<returns></returns>
public static string DataTable2Json(DataTable dt)
{
StringBuilder jsonBuilder = new StringBuilder();
for (int i = 0; i < dt.Rows.Count; i++)
{
jsonBuilder.Append("{");
for (int j = 0; j < dt.Columns.Count; j++)
{
jsonBuilder.Append("\"");
jsonBuilder.Append(dt.Columns[j].ColumnName);
jsonBuilder.Append("\":\"");
jsonBuilder.Append(dt.Rows[i][j].ToString());
jsonBuilder.Append("\",");
}
if (dt.Columns.Count > 0)
{
jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
}
jsonBuilder.Append("},");
}
if (dt.Rows.Count > 0)
{
jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
}
return jsonBuilder.ToString();
}
public bool IsReusable
{
get
{
return false;
}
}
}</span>5.add.ashx（新增数据）
<span style="font-size:14px;"><%@ WebHandler Language="C#" Class="add" %>
using System;
using System.Web;
public class add : IHttpHandler {
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string result = string.Empty;
string name = context.Request.QueryString["name"];
string email = context.Request.QueryString["email"];
SqlHelp sqla = new SqlHelp();
string sqlString = "insert into Rex_Test(tName,tEmail) values('"+name+"','"+email+"')";
bool aa = sqla.ExecuteNonQuery(sqlString);
sqla.SqlClose();
if (aa)
{
result = "添加纪录成功";
}
context.Response.Write(result);
}
public bool IsReusable
{
get
{
return false;
}
}
}</span>6.del.ashx（删除数据）
<span style="font-size:14px;"><%@ WebHandler Language="C#" Class="del" %>
using System;
using System.Web;
public class del : IHttpHandler {
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string result = string.Empty;
string id = context.Request.QueryString["id"];
SqlHelp sqla = new SqlHelp();
string sqlString = "delete from Rex_Test where ID='" + id + "'";
bool aa = sqla.ExecuteNonQuery(sqlString);
sqla.SqlClose();
if (aa)
{
result = "删除成功";
}
context.Response.Write(result);
}
public bool IsReusable
{
get
{
return false;
}
}
}</span>7.refresh.ashx（更新数据）
<span style="font-size:14px;"><%@ WebHandler Language="C#" Class="refresh" %>
using System;
using System.Web;
public class refresh : IHttpHandler {
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string result = string.Empty;
string id = context.Request.QueryString["id"];
string name = context.Request.QueryString["name"];
string email = context.Request.QueryString["email"];
SqlHelp sqla = new SqlHelp();
string sqlString = "update Rex_Test set tName='"+name+"',tEmail='"+email+"' where ID='" + id + "'";
bool aa = sqla.ExecuteNonQuery(sqlString);
sqla.SqlClose();
if (aa)
{
result = "更新成功";
}
context.Response.Write(result);
}
public bool IsReusable
{
get
{
return false;
}
}
}</span>8.基本上这个样子就差不多了，更加细化的东西还没来得及做，下次弄好了才发吧。
哦，对了，代码里的SqlHelp sqla = new SqlHelp();其实就是个sql操作类，自己写的，网上有很多这种的SqlHelper，这个我就不贴出来了吧。
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