ASP.NET GirdView学习之六 使用模板列实现多行删除

1using System; 2using System.Data; 3using System.Configuration; 4using System.Collections; 5using System.Web; 6using System.Web.Security; 7using System.Web.UI; 8using System.Web.UI.WebControls; 9using System.Web.UI.WebControls.WebParts;10using 

System.Web.UI.HtmlControls;11using System.Collections.Generic;1213public partial class GridViewTemplateTest : System.Web.UI.Page14

{15    //当前页码,从0开始16    private int curPage17    {18        get19        {20            return ViewState["curPage"] == null ? 0 : Convert.ToInt32(ViewState["curPage"]);21        }22        set23        {24            ViewState["curPage"] = value;25        }26    }27    protected void Page_Load(object sender, EventArgs e)28    {29        if (!IsPostBack)30        {31            ClientInfoAccessObj accessor = new ClientInfoAccessObj();32            curPage = 0;  //显示第一页
33            GridView1.DataSource = accessor.GetAllClients();34            GridView1.DataBind();35        }36    }37    protected void btnDeleteSelectedInfo_Click(object sender, EventArgs e)38    {39        List<int> SelectedClientIDs = GetSelectedClientIDs();40        if (SelectedClientIDs.Count == 0)41            return;4243        ClientInfoAccessObj accessor = new ClientInfoAccessObj();44        foreach (int id in SelectedClientIDs)45        {46            accessor.DeleteClientInfoForID(id);47        }48        ClientScript.RegisterStartupScript(this.GetType(), "info", "alert('记录已成功删除');", true);4950        //计算应该显示哪一页51        if (SelectedClientIDs.Count == GridView1.PageSize) //选中全页上的所有记录52            if (curPage != 0)53                curPage--;   //显示前一页545556        //重新绑定数据并显示57        GridView1.DataSource = accessor.GetAllClients();58        GridView1.PageIndex = curPage;59        GridView1.DataBind();60    }6162    private List<int> GetSelectedClientIDs()63    {64        List<int> ids = new List<int>();65        //循环查找被选中的行66        foreach (GridViewRow gvr in GridView1.Rows)
67        {68            //是数据行69            if (gvr.RowType == DataControlRowType.DataRow)70            {71                //根据模板列中的控件ID查找指定的控件72                CheckBox chk = gvr.FindControl("CheckBox1") as CheckBox;73                if ((chk != null) && chk.Checked)74                    //取出选中行的主键，加入到集合中75                    ids.Add((int)GridView1.DataKeys[gvr.RowIndex].Value);76            }77        }78        return ids;79    }80    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)81    {82        ClientInfoAccessObj accessor = new ClientInfoAccessObj();83        GridView1.DataSource = accessor.GetAllClients();84        GridView1.PageIndex = e.NewPageIndex;85        GridView1.DataBind();86        //保存当前页码87        curPage = e.NewPageIndex;88    }89}90

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