我把我的问题放在这里，它显示在屏幕截图中。我的代码如下。
.aspx 文件的代码
<asp:GridView ID="grid" runat="server" DataKeyNames="EventID" AutoGenerateColumns="false"
Width="100%" AllowPaging="True" OnRowDataBound="grid_RowDataBound" PageSize="3"
OnRowEditing="grid_RowEditing" OnRowUpdating="grid_RowUpdating" OnRowCancelingEdit="grid_RowCancelingEdit"
OnPageIndexChanging="grid_PageIndexChanging">
<PagerSettings FirstPageText="First" LastPageText="Last" Mode="NextPreviousFirstLast"
NextPageText="Next" PreviousPageText="Prev" PageButtonCount="3" />
<Columns>
<asp:TemplateField>
<HeaderTemplate>
Client Name
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblClientName" runat="server" Text='<%# Eval("ClientName")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtClientName" runat="server" Text='<%# Eval("ClientName")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Event Name
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblEventName" runat="server" Text='<%# Eval("Name")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEventName" runat="server" Text='<%# Eval("Name")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Invited Persons
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblNoOfInvitees" runat="server" Text='<%# Eval("No_Of_Invitees")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtNoOfInvitees" runat="server" Text='<%# Eval("No_Of_Invitees")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Total Invitees
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblTotalInvitees" runat="server" Text='<%# Eval("Total_Invitees")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtTotalInvitees" runat="server" Text='<%# Eval("Total_Invitees")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Extra Invitees
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblExtraInvitees" runat="server" Text='<%# Eval("Extra_Invitees")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtExtraInvitees" runat="server" Text='<%# Eval("Extra_Invitees")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Confirmed
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblConfirmed" runat="server" Text='<%# Eval("Extra_Invitees")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtConfirmed" runat="server" Text='<%# Eval("Extra_Invitees")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowEditButton="true" HeaderText="Edit" />
<%-- <asp:TemplateField>
<HeaderTemplate>
Delete
</HeaderTemplate>
<ItemTemplate>
<asp:LinkButton CommandName="Delete" ID="btnDelete" runat="server" Text="Delete"
OnClientClick="return validate();" />
<script type="text/javascript" language="javascript">
function validate() {
return confirm('Are you sure want to delete this user ?');
}
</script>
</ItemTemplate>
</asp:TemplateField>--%>
</Columns>
</asp:GridView>
</td>
</tr>
<tr>
<td>
Showing
<asp:Label ID="PageIdxLabel" Text="1" runat="server" />
to
<asp:Label ID="PageRowCountLabel" runat="server" />
of
<asp:Label ID="PageTotalLabel" runat="server" Text="Label" />
</td>
</tr>
</table>
</ContentTemplate>
</asp:UpdatePanel>
和 aspx.cs 文件编码在这里。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DataLayer;
using System.Data.Linq;
using System.Web.Extensions;
using System.Web.UI.WebControls.WebParts;
namespace EventManagerApp
{
public partial class EventList : System.Web.UI.Page
{
EventManagerDataContext db = new EventManagerDataContext();
[System.Web.Services.WebMethod]
public static string[] GetNames(string prefixText)
{
EventManagerDataContext db = new EventManagerDataContext();
return db.EMR_EVENTs.Where(n => n.Name.StartsWith(prefixText)).OrderBy(n => n.Name).Select(n => n.Name).ToArray();
//return db.EMR_CLIENTs.Where(n => n.Name.StartsWith(prefixText)).OrderBy(n => n.Name).Select(n => n.Name).ToArray();
}
protected void grid_RowEditing(object sender, GridViewEditEventArgs e)
{
grid.EditIndex = e.NewEditIndex;
grdBind();
}
protected void grid_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
grid.EditIndex = -1;
grdBind();
}
protected void grid_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int EventID = Convert.ToInt32(grid.DataKeys[e.RowIndex].Value.ToString());
string ClientName = ((TextBox)grid.Rows[e.RowIndex].FindControl("txtClientName")).Text;
string EventName = ((TextBox)grid.Rows[e.RowIndex].FindControl("txtEventName")).Text;
int TotalInvitees = int.Parse(((TextBox)grid.Rows[e.RowIndex].FindControl("txtTotalInvitees")).Text);
int ExtraInvitees = int.Parse(((TextBox)grid.Rows[e.RowIndex].FindControl("txtExtraInvitees")).Text);
int Confirmed = int.Parse(((TextBox)grid.Rows[e.RowIndex].FindControl("txtConfirmed")).Text);
EventManagerDataContext db = new EventManagerDataContext();
var q = (from a in db.EMR_EVENTs
join b in db.EMR_CLIENTs on a.ClientID equals b.ClientID
where a.EventID == EventID
select a).First();
q.EMR_CLIENT.Name = ClientName;
q.Name = EventName;
q.No_Of_Invitees = TotalInvitees;
q.Extra_Invitees = ExtraInvitees;
q.Total_Invitees = ExtraInvitees + TotalInvitees;
db.SubmitChanges();
grid.EditIndex = -1;
grdBind();
}
protected void Page_Load(object sender, EventArgs e)
{
lblwelcometext.Text = (string)(Session["name"]);
try
{
if (!IsPostBack)
{
grdBind();
bindClients();
}
}
catch (Exception ex)
{
throw ex;
}
}
public class DALClass
{
private static EventManagerDataContext db = new EventManagerDataContext() { CommandTimeout = 36000 };
public static List<EMR_CLIENT> GetClients()
{
return db.EMR_CLIENTs.ToList();
}
}
protected void bindClients()
{
drpClient.DataSource = DALClass.GetClients();
drpClient.DataTextField = "Name";
drpClient.DataValueField = "ClientID";
drpClient.DataBind();
string Name = drpClient.SelectedItem.Value;
}
protected void grdBind()
{
try
{
EventManagerDataContext db = new EventManagerDataContext();
if (txtSearchEvent.Text == "")
{
var q = from a in db.EMR_EVENTs
join b in db.EMR_CLIENTs on a.ClientID equals b.ClientID
select new
{
ClientName = b.Name,
ClientID = a.ClientID,
Name = a.Name,
No_Of_Invitees = a.No_Of_Invitees,
Extra_Invitees = a.Extra_Invitees,
Total_Invitees = a.Extra_Invitees + a.No_Of_Invitees,
EventID = a.EventID
};
grid.DataSource = q.ToList();
grid.PageSize = int.Parse(drpPageSize.SelectedValue);
grid.DataBind();
}
else
{
var data = from a in db.EMR_EVENTs
join b in db.EMR_CLIENTs on a.ClientID equals b.ClientID
where a.Name.StartsWith(txtSearchEvent.Text.Trim())
select new
{
ClientName = b.Name,
ClientID = a.ClientID,
Name = a.Name,
No_Of_Invitees = a.No_Of_Invitees,
Extra_Invitees = a.Extra_Invitees,
Total_Invitees = a.Extra_Invitees + a.No_Of_Invitees,
EventID = a.EventID
};
grid.DataSource = data.ToList();
grid.PageSize = int.Parse(drpPageSize.SelectedValue);
grid.DataBind();
}
}
catch
{
throw;
}
}
protected void txtSearchEvent_TextChanged(object sender, EventArgs e)
{
grdBind();
}
protected void drpPageSize_SelectedIndexChanged(object sender, EventArgs e)
{
grid.PageSize = int.Parse(drpPageSize.SelectedItem.Text);
grdBind();
}
protected void drpClient_SelectedIndexChanged(object sender, EventArgs e)
{
if (drpClient.SelectedIndex == 0)
{
grid.PageSize = int.Parse(drpPageSize.SelectedValue);
grdBind();
}
else
{
var q = from a in db.EMR_EVENTs
join b in db.EMR_CLIENTs on a.ClientID equals b.ClientID
where a.ClientID == int.Parse(drpClient.SelectedValue.ToString())
select new
{
ClientName = b.Name,
ClientID = a.ClientID,
Name = a.Name,
No_Of_Invitees = a.No_Of_Invitees,
Extra_Invitees = a.Extra_Invitees,
Total_Invitees = a.Extra_Invitees + a.No_Of_Invitees,
EventID = a.EventID
};
grid.DataSource = q.ToList();
grid.PageSize = int.Parse(drpPageSize.SelectedValue);
grid.DataBind();
}
}
protected void grid_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
grid.PageIndex = e.NewPageIndex;
grdBind();
}
protected void grid_RowDataBound(object sender, GridViewRowEventArgs e)
{
EventManagerDataContext db = new EventManagerDataContext();
var q = from a in db.EMR_EVENTs
join b in db.EMR_CLIENTs on a.ClientID equals b.ClientID
select new
{
ClientName = b.Name,
ClientID = a.ClientID,
Name = a.Name,
No_Of_Invitees = a.No_Of_Invitees,
Extra_Invitees = a.Extra_Invitees,
Total_Invitees = a.Extra_Invitees + a.No_Of_Invitees,
EventID = a.EventID
};
PageTotalLabel.Text = q.Count().ToString();
PageRowCountLabel.Text = grid.Rows.Count.ToString();
// PageIdxLabel.Text = grid.PageIndex.ToString();
}
}
}
所以我的问题是我想根据单击下一个和上一个按钮来更新 pageindex 值。