int PageSize; //每页条数
int PageCount; //总页数
int RecordCount;//总条数
private void Page_Load(object sender, System.EventArgs e)
{
PageSize=16; //每页为16条记录
if(!IsPostBack)
{
if(Session["ji"]==null||Session["ji"].ToString()=="")
{
Response.Write("<script language = javascript>window.open('Login.aspx','_top')</script>");
}
else
{
DataListBind();
Page.DataBind();
CalculateRecord();
}
}
}
public void LinkButton_Click(Object sender, CommandEventArgs e)//自己编写的按钮点击事件
{
CurrentPage =(int)ViewState["PageIndex"];//获得当前页索引
PageCount = (int)ViewState["PageCount"];//获得总页数
int inpage=0;
string cmd = e.CommandName;
//判断cmd，以判定翻页方向
switch (cmd)
{
case "prev"://上一页
if (CurrentPage > 0)CurrentPage--;
break;
case "next":
if (CurrentPage < (PageCount - 1)) CurrentPage++;//下一页
break;
case "first"://第一页
CurrentPage = 0;
break;
case "end"://最后一页
CurrentPage = PageCount - 1;
break;
case "jump"://跳转到第几页
try
{
inpage=int.Parse(TextBox2.Text.Trim());
}
catch
{
Response.Write("<script>alert('只能输入数字!!!')</script>");
return;
}
if (this.TextBox2.Text.Trim()== "" || Int32.Parse(this.TextBox2.Text.Trim()) > PageCount ||Int32.Parse(this.TextBox2.Text.Trim())<0)//如果输入数字为空或超出范围则返回
{
return;
}
else
{
CurrentPage = Int32.Parse(this.TextBox2.Text.ToString()) - 1;
break;
}
}
ViewState["PageIndex"] = CurrentPage;//获得当前页
//重新将DataList绑定到数据库
//CalculateRecord();
DataListBind();
}
public void CalculateRecord()
{
//不可以放在初始化条件之前就绑定，那样的话，如果仅有一页的数据，“下一页”页仍然显示
CurrentPage = 0;//当前页习惯设为0
ViewState["PageIndex"] = 0;//页索引也设为0
//计算总共有多少记录
RecordCount =com.kecount();
//计算总共有多少页
if (RecordCount % PageSize == 0)
{
PageCount = RecordCount / PageSize;
}
else
{
PageCount = RecordCount / PageSize + 1;
}
this.TotalLbl.Text = PageCount.ToString();//显示总页数
ViewState["PageCount"] = PageCount;//会话session 对整个 application 有效 ，而视图状态 viewstate相当于某个页面的 session this.DataListBind();
}
public void DataListBind()
{
string zhuang="zhuang";
int StartIndex = CurrentPage * PageSize;
if(StartIndex<0)
{
StartIndex=0;
}
DataSet ds=com.kehu1(StartIndex,PageSize,zhuang);
DataList1.DataSource=ds.Tables["zhuang"].DefaultView;
DataList1.DataBind();
this.PreviousLB.Enabled = true;
this.NextLB.Enabled = true;
if (CurrentPage == (PageCount - 1)) this.NextLB.Enabled = false;//当为最后一页时，下一页链接按钮不可用
if (CurrentPage == 0) this.PreviousLB.Enabled = false;//当为第一页时，上一页按钮不可用
this.CurrentLbl.Text = (CurrentPage + 1).ToString();//当前页数
}
private void DataList1_UpdateCommand_1(object source, System.Web.UI.WebControls.DataListCommandEventArgs e)
{
Response.Redirect("addkefu.aspx?type=2"+"&id="+DataList1.DataKeys[e.Item.ItemIndex].ToString());
}
private void DataList1_DeleteCommand_1(object source, System.Web.UI.WebControls.DataListCommandEventArgs e)
{
DataTable url=com.kehusele(int.Parse(DataList1.DataKeys[e.Item.ItemIndex].ToString())).Tables[0];
ViewState["name"]=Server.MapPath("..\\kehu\\"+url.Rows[0]["name"].ToString());
bool dele=com.delekehu(int.Parse(DataList1.DataKeys[e.Item.ItemIndex].ToString()));
if(dele==true)
{
Response.Write("<script>alert('删除成功!!!')</script>");
FileInfo finfo = new FileInfo(ViewState["name"].ToString());
if(finfo.Exists)
{
finfo.Delete();
}
}
else
{
Response.Write("<script>alert('删除失败!!!')</script>");
}
CalculateRecord();
DataListBind();
}
private void DataList1_ItemDataBound_1(object sender, System.Web.UI.WebControls.DataListItemEventArgs e)
{
if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem)
{
//判断删除按扭
Button Button2=(Button)e.Item.FindControl("Button2");
Button2.Attributes.Add("onclick","return confirm('确定要删除吗??')");
}
}
public String Imger1
{
get {return _imger1;}
set {_imger1=value;}
}
}
}
HTML
<td><FONT face="宋体" size="2"><asp:linkbutton id="FirstLB" runat="server" OnCommand="LinkButton_Click" CommandName="first">第一页</asp:linkbutton><asp:linkbutton id="PreviousLB" runat="server" OnCommand="LinkButton_Click" CommandName="prev">上一页</asp:linkbutton><asp:linkbutton id="NextLB" runat="server" OnCommand="LinkButton_Click" CommandName="next">下一页</asp:linkbutton><asp:linkbutton id="EndLB" runat="server" OnCommand="LinkButton_Click" CommandName="end">最后一页</asp:linkbutton>共
<asp:label id="TotalLbl" runat="server" ForeColor="#FF8000"></asp:label>页 当前第
<asp:label id="CurrentLbl" runat="server" ForeColor="#FF8000"></asp:label>页
<asp:linkbutton id="JumpLB" runat="server" OnCommand="LinkButton_Click" CommandName="jump">跳到</asp:linkbutton>第
<asp:TextBox id="TextBox2" runat="server" Width="63px"></asp:TextBox>页</FONT></td>
