步步为营 .NET三层架构解析 八、UI的设计(GridView的设计及其分页)
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这次我们设计员工操作列表Custom.aspx和部门操作列表Departmant.aspx的设计.以及如何设计GridView的分页功能.
先调用BLL设计方法获取数据的List列表,转换成PagedDataSource,再设置PagedDataSource属性来实现分页功能.
先看Custom.aspx的设计:
view sourceprint?<div style="text-align: center">
<asp:GridView ID="gvCustom" DataKeyNames="ID"
OnRowDeleting="GridView_RowDeleting" runat="server" CellPadding="4"
ForeColor="#333333" GridLines="None" HorizontalAlign="Center" Width="98%"
CellSpacing="1" AutoGenerateColumns="False">
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="#EFF3FB" HorizontalAlign="Center" />
<EditRowStyle BackColor="#2461BF" Font-Italic="True" HorizontalAlign="Center" VerticalAlign="Middle" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<HeaderStyle BackColor="Silver" Font-Bold="True" ForeColor="White" Font-Size="12px" HorizontalAlign="Center" />
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="id" HeaderText="ID" />
<asp:BoundField DataField="ename" HeaderText="帐户名" />
<asp:BoundField DataField="cname" HeaderText="姓名" />
<asp:BoundField DataField="age" HeaderText="年龄" />
<asp:BoundField DataField="departname" HeaderText="部门" />
<asp:HyperLinkField DataTextField="id" DataTextFormatString="修改"
HeaderText="修改" DataNavigateUrlFields="id" DataNavigateUrlFormatString="Updatecustom.aspx?id={0}" />
<asp:TemplateField HeaderText="删除">
<ItemTemplate>
<asp:LinkButton ID="LinkButton2" OnClientClick="return confirm('您确认删除该记录吗?');" runat="server" CommandName="Delete" Font-Names="宋体" Font-Strikeout="False" Font-Underline="False" ForeColor="Black">删除</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button ID="btnAddUser" runat="server" onclick="btnAddUser_Click"
Text="添加用户" />
当前页码为:<asp:Label ID="labPage" runat="server" Text="1"></asp:Label>
总页码为:<asp:Label ID="labBackPage" runat="server"></asp:Label>
<asp:LinkButton ID="lnkbtnOne" runat="server" OnClick="lnkbtnOne_Click">第一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnUp" runat="server" OnClick="lnkbtnUp_Click">上一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnNext" runat="server" OnClick="lnkbtnNext_Click">下一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnBack" runat="server" OnClick="lnkbtnBack_Click">最后一页</asp:LinkButton>
</div>
现来看下Custom.aspx.cs的设计:
记在先加上:
view sourceprint?using BLL;
using Model;
然后再:
view sourceprint?public partial class Custom : PageBase
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
//验证权限
IsAdmin();
BinData();
}
}
/// <summary>
/// 绑定数据
/// </summary>
private void BinData()
{
customSystem CustomSystem = new customSystem();
List<custom> Customlist = new List<custom>();
//调用BLL方法获取列表
Customlist = CustomSystem.GetCustom();
int curpage = Convert.ToInt32(this.labPage.Text);
//设计分页
PagedDataSource ps = new PagedDataSource();
ps.DataSource = Customlist;
ps.AllowPaging = true;
//设置页面的条数
ps.PageSize = 16;
ps.CurrentPageIndex = curpage - 1;
this.lnkbtnUp.Enabled = true;
this.lnkbtnNext.Enabled = true;
this.lnkbtnBack.Enabled = true;
this.lnkbtnOne.Enabled = true;
if (curpage == 1)
{
this.lnkbtnOne.Enabled = false;
this.lnkbtnUp.Enabled = false;
}
if (curpage == ps.PageCount)
{
this.lnkbtnNext.Enabled = false;
this.lnkbtnBack.Enabled = false;
}
this.labBackPage.Text = Convert.ToString(ps.PageCount);
//绑定数据源
gvCustom.DataSource = ps;
gvCustom.DataBind();
}
/// <summary>
/// 删除一条数据
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int nid = Int32.Parse(gvCustom.DataKeys[e.RowIndex].Value.ToString());
customSystem CustomSystem = new customSystem();
CustomSystem.Deletecustom(nid);
BinData();
}
/// <summary>
/// 第一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnOne_Click(object sender, EventArgs e)
{
this.labPage.Text = "1";
BinData();
}
/// <summary>
/// 上一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnUp_Click(object sender, EventArgs e)
{
this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) - 1);
BinData();
}
/// <summary>
/// 下一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnNext_Click(object sender, EventArgs e)
{
this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) + 1);
BinData();
}
/// <summary>
/// 最后一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnBack_Click(object sender, EventArgs e)
{
this.labPage.Text = this.labBackPage.Text;
BinData();
}
/// <summary>
/// 跳转到增加页面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnAddUser_Click(object sender, EventArgs e)
{
Response.Redirect("Register.aspx");
}
}
再来看下Departmant.aspx的设计:
view sourceprint?<div style="text-align: center">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
CellSpacing="1" DataKeyNames="ID" ForeColor="#333333" GridLines="None" HorizontalAlign="Center"
OnRowDeleting="GridView_RowDeleting" Width="98%">
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="#EFF3FB" HorizontalAlign="Center" />
<EditRowStyle BackColor="#2461BF" Font-Italic="True" HorizontalAlign="Center" VerticalAlign="Middle" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<HeaderStyle BackColor="Silver" Font-Bold="True" Font-Size="12px" ForeColor="White"
HorizontalAlign="Center" />
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="id" HeaderText="ID" />
<asp:BoundField DataField="departname" HeaderText="部门名称" />
<asp:BoundField DataField="description" HeaderText="部门描述" />
<asp:HyperLinkField DataNavigateUrlFields="id" DataNavigateUrlFormatString="Updatedepart.aspx?id={0}"
DataTextField="id" DataTextFormatString="修改" HeaderText="修改" />
<asp:TemplateField HeaderText="删除">
<ItemTemplate>
<asp:LinkButton ID="LinkButton2" runat="server" CommandName="Delete" Font-Names="宋体"
Font-Strikeout="False" Font-Underline="False" ForeColor="Black" OnClientClick="return confirm('您确认删除该记录吗?');">删除</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button ID="btnAddDepartment" runat="server" onclick="btnAddDepartment_Click"
Text="添加部门" />
当前页码为:<asp:Label ID="labPage" runat="server" Text="1"></asp:Label> 总页码为:<asp:Label
ID="labBackPage" runat="server"></asp:Label>
<asp:LinkButton ID="lnkbtnOne" runat="server" OnClick="lnkbtnOne_Click">第一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnUp" runat="server" OnClick="lnkbtnUp_Click">上一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnNext" runat="server" OnClick="lnkbtnNext_Click">下一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnBack" runat="server" OnClick="lnkbtnBack_Click">最后一页</asp:LinkButton>
</div>
然后再看Departmant.aspx.cs的设计:
也一样要先加上:
view sourceprint?using BLL;
using Model;
然后再:
view sourceprint?public partial class departmant : PageBase
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
//验证权限
IsAdmin();
BinData();
}
}
/// <summary>
/// 绑定数据
/// </summary>
private void BinData()
{
departmentSystem DepartmentSystem = new departmentSystem();
List<department> Departmentlist = new List<department>();
//调用BLL方法获取列表
Departmentlist = DepartmentSystem.GetDepartment();
int curpage = Convert.ToInt32(this.labPage.Text);
//设计分页
PagedDataSource ps = new PagedDataSource();
ps.DataSource = Departmentlist;
ps.AllowPaging = true;
//设置页面的条数
ps.PageSize = 16;
ps.CurrentPageIndex = curpage - 1;
this.lnkbtnUp.Enabled = true;
this.lnkbtnNext.Enabled = true;
this.lnkbtnBack.Enabled = true;
this.lnkbtnOne.Enabled = true;
if (curpage == 1)
{
this.lnkbtnOne.Enabled = false;
this.lnkbtnUp.Enabled = false;
}
if (curpage == ps.PageCount)
{
this.lnkbtnNext.Enabled = false;
this.lnkbtnBack.Enabled = false;
}
this.labBackPage.Text = Convert.ToString(ps.PageCount);
//绑定数据源
GridView1.DataSource = ps;
GridView1.DataBind();
}
/// <summary>
/// 删除一条数据
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int nid = Int32.Parse(GridView1.DataKeys[e.RowIndex].Value.ToString());
departmentSystem DepartmentSystem = new departmentSystem();
DepartmentSystem.Deletedepart(nid);
BinData();
}
/// <summary>
/// 第一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnOne_Click(object sender, EventArgs e)
{
this.labPage.Text = "1";
BinData();
}
/// <summary>
/// 上一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnUp_Click(object sender, EventArgs e)
{
this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) - 1);
BinData();
}
/// <summary>
/// 下一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnNext_Click(object sender, EventArgs e)
{
this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) + 1);
BinData();
}
/// <summary>
/// 最后一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnBack_Click(object sender, EventArgs e)
{
this.labPage.Text = this.labBackPage.Text;
BinData();
}
/// <summary>
/// 跳转到增加页面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnAddDepartment_Click(object sender, EventArgs e)
{
Response.Redirect("ADDdepart.aspx");
}
}
到这里我们一个简单的三层架构的应用就设计完了,可能权限的设计有点薄弱,改天我再专门讲解下权限的设计,感谢大家一直以来对我关注和支持,同时也感谢大家的拍砖.
下次我会做下这个系列的导航出来,并公布源码.欢迎继续拍砖.
摘自红色黑客联盟(www.7747.net) 原文：http://www.7747.net/kf/201103/86551.html
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