利用ASP.NET AJAX实现表格更新程序
2007-09-25 12:41
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自己做了一个小程序，表格更新程序，主要功能为使用CheckBoxe允许编辑GridView行，并且能够保存修改的信息
具体程序如下：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MultipleUpdateDemo.aspx.cs" Inherits="MultipleUpdateDemo" %>
<!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>无标题页</title>
<script type="text/C#" runat="server">
[System.Web.Services.WebMethod]
public static bool UpdateText(string categoryName, string description, string Id)
{
string conectionString = "Data Source=(local);Initial Catalog=Northwind;User ID=sa;Password=sa";
System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(conectionString);
conn.Open();
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand("UPDATE Categories SET CategoryName = '" + categoryName + "', Description = '" + description + "' WHERE CategoryID = " + Id, conn);
cmd.ExecuteNonQuery();
conn.Close();
return true;
}
</script>
<script type="text/javascript">
function disableGridViewTextBoxes()
{
var gvControl = document.getElementById("gvCategories");
var inputElements = gvControl.getElementsByTagName("INPUT");
for( i = 0;i < inputElements.length; i++)
{
if(isTextBox(inputElements[i]))
{
inputElements[i].disabled = true;
}
}
}
function isTextBox(obj)
{
return obj.type == 'text';
}
function editMode(obj)
{
var rowObject = obj.parentElement.parentElement;
var inputElements = getElementsByTagName(rowObject,"INPUT");
if(obj.checked)
{
showElements(inputElements,"INPUT","text");
}
else
{
hideElements(inputElements,"text");
}
}
function updateMode(obj)
{
var rowObject = obj.parentElement.parentElement;
var inputElements = getElementsByTagName(rowObject,"INPUT");
var msg = new Array();
for(var i=0;i<inputElements.length;i++)
{
if(inputElements[i].type == "checkbox")
{
inputElements[i].checked = false;
}
if(inputElements[i].type == "text")
{
msg.push(inputElements[i].value);
}
if(inputElements[i].type == "hidden")
{
msg.push(inputElements[i].value);
}
}
PageMethods.UpdateText(msg[0], msg[1], msg[2], onSuccess);
hideElements(inputElements,"text");
}
function onSuccess(response)
{
}
function showElements(list, tagName,type)
{
for(i = 0;i < list.length; i++)
{
if(isTypeOf(list[i],"text"))
{
list[i].disabled = false;
list[i].focus();
//list[i].select();
}
}
}
function isTypeOf(obj,type)
{
return obj.type == type;
}
function hideElements(list, type)
{
for(i = 0; i < list.length;i++)
{
if(isTypeOf(list[i],type))
{
list[i].disabled = true;
}
}
}
function getElementsByTagName(obj,tagName)
{
return obj.getElementsByTagName(tagName);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
</asp:ScriptManager>
<div>
<asp:GridView ID="gvCategories" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" onclick="editMode(this)" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Category Name">
<ItemTemplate>
<asp:TextBox ID="txtCategoryName" BorderWidth="0px" ForeColor="red" runat="server"
Text='<%# Eval("CategoryName") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Description">
<ItemTemplate>
<asp:TextBox ID="txtDescription" BorderWidth="0px" ForeColor="red" runat="server"
Text='<%# Eval("Description") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:HiddenField Value='<%# Eval("CategoryID") %>' ID="hiddenId" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<input type="button" runat="server" id="btnUpdate" value="更新" onclick="updateMode(this)" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="SELECT * FROM [Categories]"></asp:SqlDataSource>
</div>
</form>
</body>
</html>
<script>
disableGridViewTextBoxes();
</script>
运行结果为：
打上勾变为表格该行可编辑：
点击更新后就保存修改信息：
具体程序如下：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MultipleUpdateDemo.aspx.cs" Inherits="MultipleUpdateDemo" %>
<!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>无标题页</title>
<script type="text/C#" runat="server">
[System.Web.Services.WebMethod]
public static bool UpdateText(string categoryName, string description, string Id)
{
string conectionString = "Data Source=(local);Initial Catalog=Northwind;User ID=sa;Password=sa";
System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(conectionString);
conn.Open();
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand("UPDATE Categories SET CategoryName = '" + categoryName + "', Description = '" + description + "' WHERE CategoryID = " + Id, conn);
cmd.ExecuteNonQuery();
conn.Close();
return true;
}
</script>
<script type="text/javascript">
function disableGridViewTextBoxes()
{
var gvControl = document.getElementById("gvCategories");
var inputElements = gvControl.getElementsByTagName("INPUT");
for( i = 0;i < inputElements.length; i++)
{
if(isTextBox(inputElements[i]))
{
inputElements[i].disabled = true;
}
}
}
function isTextBox(obj)
{
return obj.type == 'text';
}
function editMode(obj)
{
var rowObject = obj.parentElement.parentElement;
var inputElements = getElementsByTagName(rowObject,"INPUT");
if(obj.checked)
{
showElements(inputElements,"INPUT","text");
}
else
{
hideElements(inputElements,"text");
}
}
function updateMode(obj)
{
var rowObject = obj.parentElement.parentElement;
var inputElements = getElementsByTagName(rowObject,"INPUT");
var msg = new Array();
for(var i=0;i<inputElements.length;i++)
{
if(inputElements[i].type == "checkbox")
{
inputElements[i].checked = false;
}
if(inputElements[i].type == "text")
{
msg.push(inputElements[i].value);
}
if(inputElements[i].type == "hidden")
{
msg.push(inputElements[i].value);
}
}
PageMethods.UpdateText(msg[0], msg[1], msg[2], onSuccess);
hideElements(inputElements,"text");
}
function onSuccess(response)
{
}
function showElements(list, tagName,type)
{
for(i = 0;i < list.length; i++)
{
if(isTypeOf(list[i],"text"))
{
list[i].disabled = false;
list[i].focus();
//list[i].select();
}
}
}
function isTypeOf(obj,type)
{
return obj.type == type;
}
function hideElements(list, type)
{
for(i = 0; i < list.length;i++)
{
if(isTypeOf(list[i],type))
{
list[i].disabled = true;
}
}
}
function getElementsByTagName(obj,tagName)
{
return obj.getElementsByTagName(tagName);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
</asp:ScriptManager>
<div>
<asp:GridView ID="gvCategories" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" onclick="editMode(this)" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Category Name">
<ItemTemplate>
<asp:TextBox ID="txtCategoryName" BorderWidth="0px" ForeColor="red" runat="server"
Text='<%# Eval("CategoryName") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Description">
<ItemTemplate>
<asp:TextBox ID="txtDescription" BorderWidth="0px" ForeColor="red" runat="server"
Text='<%# Eval("Description") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:HiddenField Value='<%# Eval("CategoryID") %>' ID="hiddenId" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<input type="button" runat="server" id="btnUpdate" value="更新" onclick="updateMode(this)" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="SELECT * FROM [Categories]"></asp:SqlDataSource>
</div>
</form>
</body>
</html>
<script>
disableGridViewTextBoxes();
</script>
运行结果为：
打上勾变为表格该行可编辑：
点击更新后就保存修改信息：
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