asp.net Repeater控件的使用方法-优快云博客

本文介绍了如何利用Repeater控件进行数据绑定、数据删除及状态（启用/禁用）的更改操作。通过配置连接字符串、SQL查询与数据集填充，实现了数据的展示与交互功能。同时，展示了如何通过事件处理器实现数据的删除与状态切换，为网页应用提供了高效的数据管理手段。

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今天学习了，Repeater控件

repeater绑定数据：

protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
BindStudent();
}

private void BindStudent()
{
string str = ConfigurationManager.ConnectionStrings["stucnn"].ConnectionString;
using (SqlConnection sqlCnn = new SqlConnection(str))
{
using (SqlDataAdapter da = new SqlDataAdapter("select * from student", sqlCnn))
{
DataSet ds = new DataSet();
da.Fill(ds);
this.Repeater1.DataSource = ds;
this.Repeater1.DataBind();
}
}
}

删除数据：

protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName == "Delete")
{
string str = ConfigurationManager.ConnectionStrings["stucnn"].ConnectionString;
using (SqlConnection sqlCnn = new SqlConnection(str))
{
using (SqlCommand sqlCmm = sqlCnn.CreateCommand())
{
sqlCnn.Open();
sqlCmm.CommandText = "delete from student where sid="
+ e.CommandArgument.ToString();
sqlCmm.ExecuteNonQuery();
}
}
this.BindStudent();
}
else if (e.CommandName == "Edit")
{
Server.Transfer("Edit.aspx?sid=" + e.CommandArgument.ToString());
}
}

前台：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<asp:Repeater ID="Repeater1" runat="server"
onitemcommand="Repeater1_ItemCommand">
<HeaderTemplate><table>
<tr><td style="width:100px">编号</td><td style="width:100px">姓名</td>
<td style="width:100px">图片</td><td> </td><td> </td></tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td><%# Eval("sid") %></td><td><%# Eval("sname") %></td>
<td><img width="60px" height="60px" src='<%# "images/" + Eval("photo") %>' /></td>
<td><asp:LinkButton ID="btnDelete" runat="server" Text="删除" CommandName='Delete' CommandArgument='<%# Eval("sid") %>'></asp:LinkButton></td>
<td><asp:LinkButton ID="btnEdit" runat="server" Text="编辑" CommandName='Edit' CommandArgument='<%# Eval("sid") %>'></asp:LinkButton></td>
</tr>
</ItemTemplate>
<AlternatingItemTemplate>
<tr style="background-color:Green">
<td><%# Eval("sid") %></td><td><%# Eval("sname") %></td>
<td><img width="60px" height="60px" src='<%# "images/" + Eval("photo") %>' /></td>
<td><asp:LinkButton ID="btnDelete" runat="server" Text="删除" CommandName='Delete' CommandArgument='<%# Eval("sid") %>'></asp:LinkButton></td>
<td><asp:LinkButton ID="btnEdit" runat="server" Text="编辑" CommandName='Edit' CommandArgument='<%# Eval("sid") %>'></asp:LinkButton></td>
</tr>
</AlternatingItemTemplate>
<SeparatorTemplate>
<tr><td colspan="5"><hr /></td></tr>
</SeparatorTemplate>
<FooterTemplate></table></FooterTemplate>
</asp:Repeater>

</div>
</form>
</body>
</html>

启用，禁用：

protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
{
//string status = e.CommandName;
if ((e.CommandName == "true")||(e.CommandName == "false"))
{
string str = ConfigurationManager.ConnectionStrings["stucnn"].ConnectionString;
using (SqlConnection sqlCnn = new SqlConnection(str))
{
using (SqlCommand sqlCmm = sqlCnn.CreateCommand())
{
sqlCnn.Open();
sqlCmm.CommandText = "update student set status=@status where sid="
+ e.CommandArgument.ToString();
sqlCmm.Parameters.AddWithValue("@status",e.CommandName);
sqlCmm.ExecuteNonQuery();
}
}
this.BindStudent();
}
}

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Debug="true" 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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Repeater ID="Repeater1" runat="server"
onitemcommand="Repeater1_ItemCommand">
<HeaderTemplate><table><tr><th>编号</th><th>姓名</th><th>状态</th><th> </th></tr></HeaderTemplate>
<ItemTemplate>
<tr><td><%# Eval("SID") %></td>
<td><%# Eval("sname") %></td>
<td><%# Convert.ToBoolean(Eval("status"))?"启用":"禁用" %></td>
<td><asp:LinkButton ID="btnSetStatus" runat="server" CommandArgument='Eval("sid")' Text='<%# Convert.ToBoolean(Eval("status"))?"禁用":"启用" %>' CommandName='<%# Convert.ToBoolean(Eval("status"))?"false":"true" %>'></asp:LinkButton></td></tr>
</ItemTemplate>
<FooterTemplate></table></FooterTemplate>
</asp:Repeater>
</div>
</form>
</body>
</html>