public delegate void PageChangeDeleagete(DataTable dt); //定义委托
public event PageChangeDeleagete PageChangeEvent; //定义事件
private DataTable dt = new DataTable(); //数据源
protected void Page_Load(object sender, EventArgs e)
{
} /// <summary>
/// 设置当前页码
/// </summary>
public int PageIndex
{
get
{
return ViewState["pageIndex"] == null ? 1 : Convert.ToInt32(ViewState["pageIndex"]);
}
set
{
ViewState["pageIndex"] = value; }
} /// <summary>
/// 设置数据源，及控件状态初始化
/// </summary>
/// <param name="pageSize">每页条数</param>
/// <param name="pageTotal">总条数</param>
/// <param name="refDt">数据源</param>
public void setDataTable(int pageTotal, int pageSize, DataTable refDt)
{
dt = refDt;
int currentPage = GetPageCount(pageTotal, pageSize);
if (PageIndex == 1)
{
lbIndex.Enabled = false;
lbBack.Enabled = false;
}
else
{
lbIndex.Enabled = true;
lbBack.Enabled = true;
}
if (PageIndex == currentPage)
{
lbNext.Enabled = false;
lbLast.Enabled = false;
}
else
{
lbNext.Enabled = true;
lbLast.Enabled = true;
}
lblTotalPage.Text = currentPage + "";
lblCurrentPage.Text = PageIndex + "";
lblPageSize.Text = pageSize + "";
lblTotal.Text = pageTotal + "";
}
/// <summary>
/// 获得总页码
/// </summary>
/// <param name="pageTotalCount">总记录数</param>
/// <param name="pageSize">当前记录</param>
/// <returns>总页码</returns>
private int GetPageCount(int pageTotalCount, int pageSize)
{
int num = 1;
if (pageTotalCount % pageSize == 0)
{
num = pageTotalCount / pageSize;
}
else
{
num = pageTotalCount / pageSize + 1;
}
return num;
} /// <summary>
/// 首页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lbIndex_Click(object sender, EventArgs e)
{
PageIndex = 1;
PageChangeEvent(dt);
}
/// <summary>
/// 上一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lbBack_Click(object sender, EventArgs e)
{
PageIndex--;
PageChangeEvent(dt);
}
/// <summary>
/// 下一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lbNext_Click(object sender, EventArgs e)
{
PageIndex++;
PageChangeEvent(dt);
}
/// <summary>
/// 最后一页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lbLast_Click(object sender, EventArgs e)
{
PageIndex = Convert.ToInt32(this.lblTotalPage.Text);
PageChangeEvent(dt);
} /// <summary>
/// 跳到目的页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnT_Click(object sender, EventArgs e)
{
if (txtPageNum.Text.Trim() != "")
{
int num = Convert.ToInt32(txtPageNum.Text); if (num <= Convert.ToInt32(this.lblTotalPage.Text) && num > 0)
{
PageIndex = num;
txtPageNum.Text = "";
PageChangeEvent(dt);
}
}
}
{
if (!IsPostBack)
{
bind();
}
PagerControl1.PageChangeEvent += new PagerControl.PageChangeDeleagete(PagerControl1_PageChangeEvent);
} void PagerControl1_PageChangeEvent(System.Data.DataTable dt)
{
bind();
}
int cup = Convert.ToInt32(Label1.Text);
PagedDataSource ps = new PagedDataSource();
ps.DataSource = ds.Tables["NetShop"].DefaultView;
ps.AllowPaging = true;
ps.PageSize = 6;
ps.CurrentPageIndex = cup - 1;
Label2.Text = ps.DataSourceCount.ToString();
lb_page.Text = ps.PageCount.ToString();
if (!IsPostBack)
{
for (int i = 1; i < ps.PageCount + 1; i++)
{
this.DropDownList1.Items.Add(i.ToString());
}
previouspg.Enabled = true;
nextpg.Enabled = true;
}
try
{
DropDownList1.SelectedItem.Text = cup.ToString();
DataList1.DataSource = ps;
DataList1.DataBind();
}
catch (Exception ex)
{
throw ex;
} protected void firstpg_Click(object sender, EventArgs e)
{
if (Label1.Text != "1")
{
Label1.Text = "1";
}
else
{
LblMsg.Visible = true;
LblMsg.Text = "已经是第一页了！";
}
setbind();
}
protected void previouspg_Click(object sender, EventArgs e)
{ try
{
if (Convert.ToInt16(Label1.Text) > 1)
{
Label1.Text = Convert.ToString(Convert.ToInt32(Label1.Text) - 1);
DropDownList1.SelectedValue = Label1.Text;
setbind();
}
else
{
LblMsg.Visible = true;
LblMsg.Text = "已经是第一页了！";
}
}
catch (Exception ex)
{ LblMsg.Visible = true;
LblMsg.Text = "已经是第一页了！"; } }
protected void nextpg_Click(object sender, EventArgs e)
{
try
{
Label1.Text = Convert.ToString(Convert.ToInt32(Label1.Text) + 1);
DropDownList1.SelectedValue = Label1.Text;
setbind();
}
catch (Exception ex)
{
LblMsg.Visible = true;
LblMsg.Text = "已经是最后一页了！";
Label1.Text = "1";
setbind();
}
}
protected void lastpg_Click(object sender, EventArgs e)
{
if (Label1.Text.ToString() != lb_page.Text.ToString())
Label1.Text = lb_page.Text.ToString();
else
{
}
setbind();
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
int page = Convert.ToInt16((DropDownList1.SelectedItem.Value));
Label1.Text = page.ToString();
setbind(); }
当前页：<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> 总页数：<asp:Label
ID="Label2" runat="server" Text="Label"></asp:Label>
<asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">上一页</asp:LinkButton>
<asp:LinkButton ID="LinkButton2" runat="server" OnClick="LinkButton2_Click">下一页</asp:LinkButton>
<asp:LinkButton ID="LinkButton3" runat="server" OnClick="LinkButton3_Click">尾页</asp:LinkButton></div>
</form>
protected void LinkButton1_Click(object sender, EventArgs e)
{
if (Label1.Text == "1")
return;
bind(Convert.ToInt32(Label1.Text) - 1);
} protected void LinkButton2_Click(object sender, EventArgs e)
{
if (Label1.Text == Label2.Text)
return;
bind(Convert.ToInt32(Label1.Text) + 1);
} protected void LinkButton3_Click(object sender, EventArgs e)
{
if (Label1.Text == Label2.Text)
return;
bind(Convert.ToInt32(Label2.Text));
}
在GridView中实现分页的效果方法很简单，只需要在“GridView任务”对话框中进行设置就可以了。在“GridView任务”对话框中，选择“启用分页”命令，这样建立起简单的分页效果。 在使用“启用分页”命令的时候要注意两点。 （1） 是否允许分页 GridView的AllowPaging属性。AllowPaging：是否允许分页。如果AllowPaging=“true”就是允许分页。否则就是不允许使用分页。 （2） 每页记录数 GridView的PageSize属性。在GridView控件的属性中可以设置每页显示的数据记录的个数。默认情况下PageSize的值是10，也可以根据需要进行设置。 如果想要对分页编码进行设置的话，可以在HTML代码中为GridView控件添加分页导航条形式代码。也就是启用GridView的PagerSettings属性，在PagerSettings属性中可以设置根据需要设置Mode的值，来实现分页编码的显示效果。 <PagerSettings Mode = "NextPreviousFirstLast" FirstPageText = "第一页" LastPageText = "末页"> </PagerSettings>
注意： PagerSettings属性的Mode：Numeric，NextPrevious，NextPreviousFirstLast，NumericFirstLast。有这四种，可以根据不同需要进行不同的选择设置。 自动设置分页效果
现在想要在GridView控件上显示如下页码信息：总页数、当前页、首页、上一页、下一页、尾页。 创建总页数 <asp:Label ID="Lab_PageCount" runat="server" Text="<%# ((GridView)Container.NamingContainer).PageCount %>"></asp:Label> 创建但前页 <asp:Label ID="Lab_CurrentPage" runat="server" Text="<%# ((GridView)Container.NamingContainer).PageIndex + 1 %>"></asp:Label> 创建首页 <asp:LinkButton ID="LBtn_FirstPage" runat="server" CommandArgument="First" CommandName="Page" Visible="<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>">首页</asp:LinkButton> 创建上一页 <asp:LinkButton ID="LBtn_PreviousPage" runat="server" CommandArgument="Prev" CommandName="Page" Visible="<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>">上一页</asp:LinkButton> 创建下一页 <asp:LinkButton ID="LBtn_NextPage" runat="server" CommandArgument="Next" CommandName="Page" Visible="<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>">下一页</asp:LinkButton> 创建尾页 <asp:LinkButton ID="LBtn_LastPage" runat="server" CommandArgument="Last" CommandName="Page" Visible="<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>">尾页</asp:LinkButton> 对应后台代码 public void GetDataSet()
{
string zhuangtmc;
zhuangtmc = Convert.ToString(DropDownList1.Text);
string sql;
sql = "Select L.LunWBH,L.LunWBT,Z.ZhuangTMC,L.ZhuCYHM,B.BianJM,L.TouGRQ From T_LunWXX L ,T_LunWZhT Z,T_BianJPL B ";
sql += "Where L.ZhuangTBH=Z.ZhuangTBH AND B.LunWBH=L.LunWBH AND";
sql += " B.BianJM='" + zhucyhm + "'";
if (zhuangtmc != "")
{
sql += " And Z.ZhuangTMC='" + zhuangtmc + "'";
}
sql += " Order By TouGRQ";
CommonDB = new Common();
GridView1.DataSource = CommonDB.DataSource(sql);
GridView1.DataBind(); //用lblCurrentIndex来显示当前页的页数。
LabelCurrentPage.Text = "第 " + (GridView1.PageIndex + 1).ToString() + " 页";
//用LblPageCount来显示当前数据的总页数。
LabelPageCount.Text = "共 " + GridView1.PageCount.ToString() + " 页";
//用LblrecordCount来显示数据的总条数。
LabelRecordCount.Text = "总共 " + CommonDB.DataSets(sql).Tables[0].Rows.Count.ToString() + " 条"; // 计算生成分页页码,分别为："首 页" "上一页" "下一页" "尾 页"
//点击首页设定的值为１。
LinkButtonFirstPage.CommandName = "1";
//点击‘上一页’
LinkButtonPreviousPage.CommandName = (GridView1.PageIndex == 0 ? "1" : GridView1.PageIndex.ToString());
//点击‘下一页’
LinkButtonNextPage.CommandName = (GridView1.PageCount == 1 ? GridView1.PageCount.ToString() : (GridView1.PageIndex + 2).ToString());
//点击‘尾页’
LinkButtonLastPage.CommandName = GridView1.PageCount.ToString();
}