GridView事件大全

 

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using IOIOT.DataControl;

public partial class Admin_LinksOperation : System.Web.UI.Page
{
       DCAdmin dcadmin=new DCAdmin();
       DCPublic dcpub=new DCPublic();
       protected void Page_Load(object sender, EventArgs e)
       {
           if (!IsPostBack)
           {
               GVBind();
           }
       }


      //绑定
       private void GVBind()
       {
           DataTable dt = dcpub.SelectAllTable("Links", "", "", "CreateDate");
           GridView1.DataSource = dt.DefaultView;
           GridView1.DataBind();
       }
       //分页,需要设置AllowPaging="true"
       protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
       {
           GridView1.PageIndex = e.NewPageIndex;
           GVBind();
       }
    
       protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
       {
           GridView1.EditIndex = e.NewEditIndex;
           GVBind();
       }
      //取ID值需要设置DataKeyNames="LinkID"
       protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
       {
           int LID = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value);
           string LinkText = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("Elinktext")).Text;
           string LinkIMG = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("Elinkimg")).Text;
           string LinkURL = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("Elinkurl")).Text;
           try
           {
               dcadmin.Table_UPDATE("Links","LinkText='" + LinkText + "',LinkImg='" + LinkIMG + "',Address='" + LinkURL + "'", "LinkID=" + LID);
               PublichClass.MsgBox("更新成功", this.Page);
           }
           catch(Exception ex)
           {
               errmessage.Text="更新失败"+ex.Message;
           }
           GridView1.EditIndex = -1;
           GVBind();
       }
       protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
       {
           GridView1.EditIndex = -1;
           GVBind();
       }
       protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
       {
           int LID = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value);
           try
           {
               dcadmin.Table_DELETE("Links", "LinkID=" + LID);
               errmessage.Text = "删除成功";
               PublichClass.MsgBox("删除成功", this.Page);
               GVBind();
           }
           catch (Exception ex)
           {
               errmessage.Text = "删除失败" + ex.Message;
           }
       }
      //排序,需要设置AllowSorting="true",同时在项里需要设置 SortExpression="LinkID"
       protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
       {
           if ((string)ViewState["Sort"] != e.SortExpression)
           {
               ViewState["Sort"] = e.SortExpression;
           }
           else
           {
               ViewState["Sort"] = e.SortExpression + " " + "DESC";
           }
           DataTable dt = dcpub.SelectAllTable("Links", "", "", "CreateDate");
           dt.DefaultView.Sort = ViewState["Sort"].ToString();
           GridView1.DataSource = dt.DefaultView;
           GridView1.DataBind();
       }
     //全选
       protected void AllLinkSelect_Click(object sender, EventArgs e)
       {
           CheckBox chkEbox;
           if (AllLinkSelect.Text == "全选")
           {
               foreach (GridViewRow gvrow in GridView1.Rows)
               {
                   chkEbox = (CheckBox)gvrow.FindControl("chbk");
                   chkEbox.Checked = true;
               }
               AllLinkSelect.Text = "取消";
           }
           else
           {
               foreach (GridViewRow gvrow in GridView1.Rows)
               {
                   chkEbox = (CheckBox)gvrow.FindControl("chbk");
                   chkEbox.Checked = false;
               }
               AllLinkSelect.Text = "全选";
           }
       }
      //删除选择项
       protected void LinkDel_Click(object sender, EventArgs e)
       {
           //删除其中选择项
           CheckBox chkbox;
           int LID;
           string DelStr = "";
           #region
           try
           {
               foreach (GridViewRow gridview in GridView1.Rows)
               {
                   chkbox = (CheckBox)gridview.FindControl("chbk");
                   if (chkbox.Checked == true)
                   {
                       LID = Convert.ToInt32(((HiddenField)gridview.FindControl("hfd_linkid")).Value);
                       DelStr += "LinkID=" + LID + " or ";
                       //dcadmin.Table_DELETE("News", "NewsID=" + NID);
                   }
               }
               if (DelStr.ToString().Trim().Length == 0)
               {
                   errmessage.Text = "没有选择任何项";
                   PublichClass.MsgBox("没有选择任何项", this.Page);
               }
               else
               {
                   DelStr = DelStr.Substring(0, DelStr.LastIndexOf("or"));
                   //删除选中的数据项
                   dcadmin.Table_DELETE("Links", DelStr);
                   //errmessage.Text = DelStr;
                   errmessage.Text = "选择项删除成功！";
                   PublichClass.MsgBox("选择项删除成功！", this.Page);
                   GVBind();
               }
           }
           catch (Exception ex)
           {
               errmessage.Text = "出错了！" + ex.Message;
           }
           AllLinkSelect.Text = "全选";
           #endregion
       }
       protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
       {
           int TTID;
           if (e.CommandName.ToString() == "topstep")
           {
               //向上移,Sort+1
               if (e.CommandArgument != null && e.CommandArgument.ToString() != "")
               {
                   //errmessage.Text = e.CommandArgument.ToString();
                   TTID = Convert.ToInt32(GridView1.DataKeys[Convert.ToInt32(e.CommandArgument)].Value);
                   int NowSort = Convert.ToInt32((dcpub.SelectAllTable("Links", "LinkID=" + TTID, "Sort", "")).Rows[0]["Sort"]);
                   int UpSort = NowSort + 1;
                   dcadmin.Table_UPDATE("Links", "Sort=" + UpSort, "LinkID=" + TTID);
                   DataTable dt = dcpub.SelectAllTable("Links", "", "", "Sort desc");
                   GridView1.DataSource = dt.DefaultView;
                   GridView1.DataBind();
               }
               else
                   //errmessage.Text = "没有参数";
                   errmessage.Text = "没有参数";
           }
           if (e.CommandName.ToString() == "bottomstep")
           {
               //向下移,Sort-1
               errmessage.Text = "22";
           }
       }
      //RowCommand事件需要添加CommandArgument
       protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
       {
           LinkButton totop;
           LinkButton tobottom;
           if (e.Row.RowType == DataControlRowType.DataRow)
           {
               totop = (LinkButton)e.Row.FindControl("totop");
               tobottom = (LinkButton)e.Row.FindControl("tobottom");
               if (totop != null)
               {
                   if (totop.CommandName == "topstep")
                       totop.CommandArgument = e.Row.RowIndex.ToString();
                   if (tobottom.CommandName == "bottomstep")
                       tobottom.CommandArgument = e.Row.RowIndex.ToString();
               }
           }
       }
}