步步为营 .NET三层架构解析八、UI的设计(GridView的设计及其分页)-白红宇

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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发布时间：2019-06-18

本文共 7367 字，大约阅读时间需要 24 分钟。

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:

现来看下Custom.aspx.cs的设计:

记在先加上:

using BLL;using Model;

然后再:

public partial class Custom : PageBase{    protected void Page_Load(object sender, EventArgs e)    {        if (!Page.IsPostBack)        {            //验证权限            IsAdmin();            BinData();        }    }    ///     /// 绑定数据    /// 
    private void BinData()    {        customSystem CustomSystem = new customSystem();        List
      
        Customlist = new List
       
        ();        //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();    }    /// 
            ///  删除一条数据    /// 
    /// 
            /// 
            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();    }    /// 
            ///  第一页    /// 
    /// 
            /// 
            protected void lnkbtnOne_Click(object sender, EventArgs e)    {        this.labPage.Text = "1";        BinData();    }    /// 
            /// 上一页    /// 
    /// 
            /// 
            protected void lnkbtnUp_Click(object sender, EventArgs e)    {        this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) - 1);        BinData();    }    /// 
            /// 下一页    /// 
    /// 
            /// 
            protected void lnkbtnNext_Click(object sender, EventArgs e)    {        this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) + 1);        BinData();    }    /// 
            /// 最后一页    /// 
    /// 
            /// 
            protected void lnkbtnBack_Click(object sender, EventArgs e)    {        this.labPage.Text = this.labBackPage.Text;        BinData();    }    /// 
            /// 跳转到增加页面    /// 
    /// 
            /// 
            protected void btnAddUser_Click(object sender, EventArgs e)    {        Response.Redirect("Register.aspx");    }}

再来看下Departmant.aspx的设计:

然后再看Departmant.aspx.cs的设计:

也一样要先加上:

using BLL;using Model;

然后再:

public partial class departmant : PageBase{    protected void Page_Load(object sender, EventArgs e)    {        if (!Page.IsPostBack)        {            //验证权限            IsAdmin();            BinData();        }    }    ///     /// 绑定数据    /// 
    private void BinData()    {        departmentSystem DepartmentSystem = new departmentSystem();        List
      
        Departmentlist = new List
       
        ();        //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();    }    /// 
            /// 删除一条数据    /// 
    /// 
            /// 
            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();    }    /// 
            /// 第一页    /// 
    /// 
            /// 
            protected void lnkbtnOne_Click(object sender, EventArgs e)    {        this.labPage.Text = "1";        BinData();    }    /// 
            /// 上一页    /// 
    /// 
            /// 
            protected void lnkbtnUp_Click(object sender, EventArgs e)    {        this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) - 1);        BinData();    }    /// 
            /// 下一页    /// 
    /// 
            /// 
            protected void lnkbtnNext_Click(object sender, EventArgs e)    {        this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) + 1);        BinData();    }    /// 
            /// 最后一页    /// 
    /// 
            /// 
            protected void lnkbtnBack_Click(object sender, EventArgs e)    {        this.labPage.Text = this.labBackPage.Text;        BinData();    }    /// 
            /// 跳转到增加页面    /// 
    /// 
            /// 
            protected void btnAddDepartment_Click(object sender, EventArgs e)    {        Response.Redirect("ADDdepart.aspx");    }}