GridView实现编辑删除

<asp:GridView ID="GridView1" runat="server" Width="100%" CellPadding="4" ForeColor="#333333"
AutoGenerateColumns="False" AllowPaging="True" PageSize="12" OnRowCancelingEdit="GridView1_RowCancelingEdit"
OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowDeleting="GridView1_RowDeleting"
DataKeyNames="id" OnPageIndexChanging="GridView1_PageIndexChanging"
GridLines="None" BorderStyle="Groove">
<Columns>
<asp:BoundField HeaderText="编号" DataField="id" Visible="false" />
<asp:BoundField HeaderText="序号" DataField="num" ReadOnly="True" />
<asp:BoundField DataField="name" HeaderText="隧道名称" ReadOnly="True" />
<asp:BoundField DataField="tunnelClassName" HeaderText="隧道类别" ReadOnly="True" />
<asp:TemplateField HeaderText="起始点">
<ItemTemplate>
<%# Eval("PointStart")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="tbStart" Text='<%# Eval("PointStart") %>' runat="server" Width="90px" />
</EditItemTemplate>
<ItemStyle Width="100px" />
</asp:TemplateField>
<asp:TemplateField HeaderText="长度">
<ItemTemplate>
<%# Eval("Length")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="tbLength" Text='<%# Eval("Length") %>' runat="server" Width="90px" />
</EditItemTemplate>
<ItemStyle Width="100px" />
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" HeaderText="操作" />
</Columns>
<PagerSettings FirstPageText="" LastPageText="" NextPageText="" PreviousPageText="" />
<RowStyle Height="20px" BackColor="#FFF3EE" ForeColor="#333333" HorizontalAlign="Center"/>
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#999999" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<PagerStyle BackColor="#FE6D38" ForeColor="Black" HorizontalAlign="Center" />
<HeaderStyle BackColor="#FE6D38" Font-Bold="True" ForeColor="Black"/>
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
</asp:GridView>

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
GridViewBind();
}

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
GridViewBind();
}

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
string connStr = ConfigurationManager.ConnectionStrings["NMXT_DBConn"].ConnectionString;
string SqlStr = "delete from TN_TunnelBlankPoints where id=" + id;

try
{
SqlConnection conn = new SqlConnection(connStr);
if (conn.State.ToString() == "Closed") conn.Open();
SqlCommand comm = new SqlCommand(SqlStr, conn);
comm.ExecuteNonQuery();
comm.Dispose();
if (conn.State.ToString() == "Open") conn.Close();

GridView1.EditIndex = -1;
GridViewBind();
}
catch (Exception ex)
{
Response.Write("数据库错误，错误原因：" + ex.Message);
Response.End();
}
}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
GridViewBind();
}

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
string strStart = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("tbStart")).Text;
string strLength = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("tbLength")).Text;

string connStr = ConfigurationManager.ConnectionStrings["NMXT_DBConn"].ConnectionString;
string SqlStr = " update TN_TunnelBlankPoints set PointStart=" + strStart + ",Length=" + strLength + " where id=" + id;

try
{
SqlConnection conn = new SqlConnection(connStr);
if (conn.State.ToString() == "Closed") conn.Open();
SqlCommand comm = new SqlCommand(SqlStr, conn);
comm.ExecuteNonQuery();
comm.Dispose();
if (conn.State.ToString() == "Open") conn.Close();

GridView1.EditIndex = -1;
GridViewBind();
}
catch (Exception ex)
{
Response.Write("数据库错误，错误原因：" + ex.Message);
Response.End();
}
}