asp.net批量刪除

asp.net批量刪除

。aspx 文件

 

 <asp:GridView ID="GridView1" runat="server" Width="100%" EmptyDataText="暫時無數據" BorderColor="White" OnRowDeleting="GridView1_RowDeleting">
                        <Columns>
                          

<asp:TemplateField HeaderText="選擇">
<ItemStyle Width="20px" />
        <ItemTemplate>
            <asp:CheckBox id="id" runat="Server" />
        </ItemTemplate>
    </asp:TemplateField>
                            <asp:BoundField DataField="id" HeaderText="序號" >
                                <ItemStyle Width="20px" />
                            </asp:BoundField>
                            <asp:TemplateField HeaderText="標題">
                                <ItemStyle Width="400px" />
                                <ItemTemplate>
                                   <a href="../shangpu/<%#eval_r("pageurl") %>" target="_blank"><%#eval_r("title") %></a>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="發表時間">
                              
                                <ItemStyle Width="100px" />
                                <ItemTemplate>
                                    <%# Convert.ToDateTime(eval_r("addtime")).Date.ToString("yyyy-MM-dd") %>
                                  
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:HyperLinkField DataNavigateUrlFormatString="shangpu_edit.aspx?id={0}" Text="修改" NavigateUrl="shangpu_edit.aspx?id={0}" DataNavigateUrlFields="id" >
                                <ItemStyle Width="30px" />
                            </asp:HyperLinkField>
                           
                              <asp:CommandField ShowDeleteButton="True" HeaderText="刪除"  DeleteText="<div id="de" οnclick="JavaScript:return confirm('確定刪除嗎？')">刪除</div>"  >
                                <ItemStyle Width="30px" />
                            </asp:CommandField>
                        </Columns>
                        <EmptyDataTemplate>
                        <font color=red>暫時無數據</font>
                        </EmptyDataTemplate>
            <RowStyle Height="20px" />
                    </asp:GridView>

 

。cs 文件

 

protected void btndeleteall_Click(object sender, EventArgs e)
    {
        string sqltext = "(";

        for (int i = 0; i < GridView1.Rows.Count; i++)
        {
            CheckBox chb = (CheckBox)GridView1.Rows[i].FindControl("id");
            if (chb.Checked)
            {
                sqltext = sqltext + GridView1.DataKeys[i].Value.ToString() + ",";
            }
        }
        sqltext = sqltext.Substring(0, sqltext.Length - 1) + ")";

        sqltext = "delete from shangpu where id in" + sqltext;

        string sqlcon = ConfigurationManager.AppSettings["ConnectionString"].ToString();

        SqlConnection con = new SqlConnection(sqlcon);
        con.Open();
        SqlCommand cmd = new SqlCommand(sqltext, con);
        try
        {

            int count = Convert.ToInt32(cmd.ExecuteNonQuery());
            if (count > 0)
            {
                viewbind();
                MessageBox.Show(this, "刪除成功,共刪除" + count + "條記錄！");
            }
        }
        catch
        {
            MessageBox.Show(this, "刪除失敗！");
        }
        finally
        {
            con.Close();
            con.Dispose();
        }

 

    }