GridView 编辑、删除 、分页

类似代码都差不多，记录一下，便于以后查看使用。

前台页面：

<asp:GridView ID="gdvList" runat="server" AutoGenerateColumns="False" CssClass="table table-striped table-bordered table-hover"
AllowPaging="true" PageSize="10" OnRowDeleting="gdvList_RowDeleting" OnRowCancelingEdit="gdvList_RowCancelingEdit"
OnRowEditing="gdvList_RowEditing" OnRowUpdating="gdvList_RowUpdating" OnRowDataBound="gdvList_RowDataBound"
DataKeyNames="ID" onpageindexchanging="gdvList_PageIndexChanging"
onrowcommand="gdvList_RowCommand">
<Columns>
<asp:BoundField HeaderText="ID" DataField="ID">
<FooterStyle CssClass="hidden" />
<HeaderStyle CssClass="hidden" />
<ItemStyle CssClass="hidden" />
</asp:BoundField>
<asp:TemplateField HeaderText="部门" ItemStyle-HorizontalAlign="Center">
<EditItemTemplate>
<asp:Label ID="lblDeptName" runat="server" Text='<%#Eval("deptname")%>' Width="90%"></asp:Label>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblDeptName1" runat="server" Text='<%#Eval("deptname")%>' Width="90%"></asp:Label>
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" />
<HeaderStyle Width="150px" />
</asp:TemplateField>
<asp:TemplateField HeaderText="工号" ItemStyle-HorizontalAlign="Center">
<EditItemTemplate>
<asp:Label ID="lblUserNo" runat="server" Text='<%#Eval("userNo")%>' Width="90%"></asp:Label>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblUserNo1" runat="server" Text='<%#Eval("userNo")%>' Width="90%"></asp:Label>
</ItemTemplate>
<HeaderStyle Width="150px" />
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="邮箱号" ItemStyle-HorizontalAlign="Center">
<EditItemTemplate>
<asp:Label ID="lblEmail" runat="server" Text='<%#Eval("email")%>' Width="90%"></asp:Label>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblEmail1" runat="server" Text='<%#Eval("email")%>' Width="90%"></asp:Label>
</ItemTemplate>
<HeaderStyle Width="150px" />
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="姓名" ItemStyle-HorizontalAlign="Center">
<EditItemTemplate>
<asp:Label ID="lblUserName" runat="server" Text='<%#Eval("userName")%>' Width="90%"></asp:Label>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblUserName1" runat="server" Text='<%#Eval("userName")%>' Width="90%"></asp:Label>
</ItemTemplate>
<HeaderStyle Width="150px" />
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="指标" ItemStyle-HorizontalAlign="Center">
<EditItemTemplate>
<asp:TextBox ID="txtTarget" runat="server" Text='<%#Eval("target")%>' Width="90%" />
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblTarget" runat="server" Text='<%#Eval("target")%>' Width="90%" />
</ItemTemplate>
<HeaderStyle Width="150px" />
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="管理" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:LinkButton ID="btnEdit" runat="server" Text="编辑" CommandName="Edit"></asp:LinkButton>
   
<asp:ImageButton ID="lbtnDel" runat="server" OnClientClick="return window.confirm('确认删除？');"
ImageUrl="../Images/action_delete.png" CommandName="Delete" />
</ItemTemplate>
<EditItemTemplate>
<asp:LinkButton ID="btnUpdate" runat="server" Text="保存" CommandName="Update" CommandArgument='<%#Eval("ID") %>'></asp:LinkButton>
   
<asp:LinkButton ID="btnCancle" runat="server" Text="取消" CommandName="Cancel"></asp:LinkButton>
</EditItemTemplate>
<ItemStyle HorizontalAlign="Center" />
<HeaderStyle Width="100px" />
</asp:TemplateField>
</Columns>
<PagerTemplate>
<br />
<asp:Label ID="lblPage" runat="server" Text='<%# "第" + (((GridView)Container.NamingContainer).PageIndex + 1) + "页/共" + (((GridView)Container.NamingContainer).PageCount) + "页" %> '></asp:Label>
<asp:LinkButton ID="lbnFirst" runat="Server" Text="首页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>'
CommandName="Page" CommandArgument="First"></asp:LinkButton>
<asp:LinkButton ID="lbnPrev" runat="server" Text="上一页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>'
CommandName="Page" CommandArgument="Prev"></asp:LinkButton>
<asp:LinkButton ID="lbnNext" runat="Server" Text="下一页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != (((GridView)Container.NamingContainer).PageCount - 1) %>'
CommandName="Page" CommandArgument="Next"></asp:LinkButton>
<asp:LinkButton ID="lbnLast" runat="Server" Text="尾页" Enabled='<%# ((GridView)Container.NamingContainer).PageIndex != (((GridView)Container.NamingContainer).PageCount - 1) %>'
CommandName="Page" CommandArgument="Last"></asp:LinkButton>
到第<asp:TextBox runat="server" ID="inPageNum"></asp:TextBox>页
<asp:LinkButton ID="LinkButton1" CommandName="go" runat="server">Go</asp:LinkButton>
<br />
</PagerTemplate>
</asp:GridView>

后台代码：

protected void gdvList_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
gdvList.PageIndex = -1;
GridBind();
}

protected void gdvList_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try
{
string id = this.gdvList.Rows[e.RowIndex].Cells[0].Text;
int n = userAccess.DeleteUserTarget(id);

GridBind();
}
catch
{
}
}

protected void gdvList_RowEditing(object sender, GridViewEditEventArgs e)
{
gdvList.EditIndex = e.NewEditIndex; //GridView编辑项索引等于单击行的索引

GridBind();
}

protected void gdvList_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
try
{
string id = (gdvList.Rows[e.RowIndex].FindControl("btnUpdate") as LinkButton).CommandArgument;

string target = ((TextBox)gdvList.Rows[e.RowIndex].FindControl("txtTarget")).Text;
int n = 0;
if (dataAccess.IsDecimal(target)) //更新
n = userAccess.UpdateUserTarget(id, decimal.Parse(target));
if (n > 0)
{
gdvList.EditIndex = -1;
GridBind();
}
}
catch (Exception ex)
{
ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('" + ex.Message + "')</script>");
}
}

protected void gdvList_RowDataBound(object sender, GridViewRowEventArgs e)
{

}

private void GridBind()
{
DataTable dt = new DataTable();
dt = userAccess.GetUserTarget("");

gdvList.DataSource = dt;
gdvList.DataBind();
}

涉及分页的代码：

protected void gdvList_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
try
{
gdvList.PageIndex = e.NewPageIndex;
GridBind();
TextBox tb = (TextBox)gdvList.BottomPagerRow.FindControl("inPageNum");
tb.Text = (gdvList.PageIndex + 1).ToString();
}
catch { }
}

protected void gdvList_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "go")
{
try
{
TextBox tb = (TextBox)gdvList.BottomPagerRow.FindControl("inPageNum");
int num = int.Parse(tb.Text);
GridViewPageEventArgs ea = new GridViewPageEventArgs(num - 1);
gdvList_PageIndexChanging(null, ea);
}
catch (Exception ex)
{
Response.Write("<script>alert('" + ex.Message + "')</script>");
}
}
}

如果编辑中，需要显示dropdownlist，则需要在gdvPlan_RowDataBound中编写

如：显示部门列表

<asp:TemplateField HeaderText="部门" ItemStyle-HorizontalAlign="Center">
<EditItemTemplate>
<asp:DropDownList ID="ddlDept" runat="server">
</asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblDeptName" runat="server" Text='<%#Eval("deptName")%>' Width="90%"></asp:Label>
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>

protected void gdvPlan_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (e.Row.RowState == DataControlRowState.Edit || e.Row.RowState == (DataControlRowState.Alternate | DataControlRowState.Edit))
{
//保存当前行的deptname的值
string deptname = this.gdvPlan.DataKeys[e.Row.RowIndex]["deptname"].ToString();

//对DropDownList做数据绑定
DropDownList dropTemp = (DropDownList)e.Row.Cells[4].FindControl("ddlDept");
dropTemp.ClearSelection();

if (dropTemp != null)
{
DataTable dt = dataAccess.GetDeptList();

dropTemp.DataSource = dt;
dropTemp.DataTextField = "deptname";
dropTemp.DataValueField = "deptID";
dropTemp.DataBind();

//到DropDownList中根据au_id的值去找需要设置为选中状态的项目，将其设置为选中
ListItem item = dropTemp.Items.FindByText(deptname);
if (item != null)
{
item.Selected = true;
}

}

}

}
}