GridView、ListView和SqlDataSource结合使用

(一) ##GridView和SqlDataSource结合使用

(1)步骤
1.从工具箱的数据一栏拖一个GridView和SqlDataSource控件到设计页面,给SqlDataSource配置数据源,单击配置数据源->选择要连接的数据库数据连接->选择指定来自表和视图的列选择某一张表和需要的字段->点击高级选择生成SELECT,UPDATE,SELECT语句->测试数据完成
2.给GridView选择数据源,勾选启动分页,启动编辑,启动删除,运行就会出现如下(你的数据表中数据):
这里写图片描述
(2)这里的编辑和删除本是可以实现的,但由于表与表之间有关系,所以删除某行数据时会受REFERENCE 约束,与其他表冲突,因此我们只能自己添加控件来实现客户需求.如下图:
这里写图片描述

以上添加如图所示的编辑、删除控件源代码(这里只给出一个字段的形式,其他类似):

  <Columns>
                <asp:BoundField DataField="customerNo" HeaderText="客户编号" ReadOnly="True" 
                    SortExpression="customerNo" />

                    <asp:TemplateField  HeaderText="客户名">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox_row_customerName" runat="server" 
                            style="margin-bottom: 0px"></asp:TextBox>
                        <asp:HiddenField ID="HiddenField_row_customerName" runat="server" Value='<%# Eval("customerName") %>' />
                    </EditItemTemplate>
                    <ItemTemplate>
                         <%# Eval("customerName")%> 
                    </ItemTemplate>
                </asp:TemplateField>

(3)添加控件后,我们要做的就是完善代码
//1.绑定数据

 public void bind()
        {
            string sql = "";
            sql = "select * from [Customers]";
            if (TextBox_CompanyName.Text.Trim() == "" && TextBox_contactname.Text.Trim() == "")
            {
                sql = "select * from Customers";
            }
            else
            {
                sql = "select * from Customers where CompanyName like '%" + TextBox_CompanyName.Text + "%'"
                              + " and ContactName like '%" + TextBox_contactname.Text + "%'";
            }
            //设置SqlDataSource 执行sql语句
            SqlDataSource2.SelectCommand = sql;
            //设置GridView中DataSourceID
            GridView1.DataSourceID = SqlDataSource2.ID;
            //绑定GridView数据
            GridView1.DataBind();

        }

//2.删除数据

 protected void GridView_customer_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            string number = GridView1.Rows[e.RowIndex].Cells[0].Text.ToString();
            //先把orderdetails的数据清空
            SqlDataSource2.DeleteCommand = "delete from [Order Details]";
            SqlDataSource2.Delete();
            //首先删除Orders表中的关联数据
            SqlDataSource2.DeleteCommand = "delete from [Orders] where CustomerID = '" + number + "'";
            SqlDataSource2.Delete();

            //删除选中数据
            SqlDataSource2.DeleteCommand = "delete from [Customers] where CustomerID = '" + number + "'";
            SqlDataSource2.Delete();
            bind();

        }

//3.搜索

 protected void Button_customer_search_Click(object sender, EventArgs e)
        {
            bind();
        }

//4.编辑时激发

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

//5.绑定数据后激发

 protected void customer_dataBond(object sender, GridViewRowEventArgs e)
        {
            TextBox TextBox_row_customerName = (TextBox)e.Row.FindControl("TextBox_row_customerName") as TextBox;
            //e.Row.RowType 
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                //客户名
                if (TextBox_row_customerName != null)
                {
                    TextBox_row_customerName.Text = ((HiddenField)e.Row.FindControl("HiddenField_row_customerName")).Value;
                }
                //电话
                TextBox TextBox_row_telephone = (TextBox)e.Row.FindControl("TextBox_row_telephone") as TextBox;
                if (TextBox_row_telephone != null)
                {
                    TextBox_row_telephone.Text = ((HiddenField)e.Row.FindControl("HiddenField_row_telephone")).Value;

                }
                //地址
                TextBox TextBox_row_address = (TextBox)e.Row.FindControl("TextBox_row_address") as TextBox;
                if (TextBox_row_address != null)
                {
                    TextBox_row_address.Text = ((HiddenField)e.Row.FindControl("HiddenField_row_address")).Value;

                }
                //邮编
                TextBox  TextBox_row_zip= (TextBox)e.Row.FindControl("TextBox_row_zip") as TextBox;
                if (TextBox_row_zip != null)
                {
                    TextBox_row_zip.Text = ((HiddenField)e.Row.FindControl("HiddenField_row_zip")).Value;

                }
            }
        }

//6.更新数据

protected void gdvw_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            //用户名
            TextBox TextBox_row_customerName = gdvw.Rows[e.RowIndex].FindControl("TextBox_row_customerName") as TextBox;
            //姓名
            TextBox TextBox_row_telephone = gdvw.Rows[e.RowIndex].FindControl("TextBox_row_telephone") as TextBox;
            //邮箱
            TextBox TextBox_row_address = gdvw.Rows[e.RowIndex].FindControl("TextBox_row_address") as TextBox;
            //电话
            TextBox TextBox_row_zip = gdvw.Rows[e.RowIndex].FindControl("TextBox_row_zip") as TextBox;
            string number = gdvw.Rows[e.RowIndex].Cells[0].Text.ToString();
            string sql = "";
            if (TextBox_row_customerName != null && TextBox_row_customerName.Text != "")
            {
                sql += " customerName='" + TextBox_row_customerName.Text + "',";
            }
            if (TextBox_row_telephone != null && TextBox_row_telephone.Text != "")
            {
                sql += " telephone='" + TextBox_row_telephone.Text + "',";
            }
            if (TextBox_row_address != null && TextBox_row_address.Text != "")
            {
                sql += " address='" + TextBox_row_address.Text + "',";
            }
            if (TextBox_row_zip != null && TextBox_row_zip.Text != "")
            {
                sql += " zip='" + TextBox_row_zip.Text + "',";
            }
            if (sql != "")
            {
                sql = sql.Remove(sql.LastIndexOf(","), 1);
                sql = "update Customer set " + sql + " where customerNo= '" + number + "'";//like '%" + textbox_customerName.Text + "%' "
                custmdatsoce.UpdateCommand = sql;
                custmdatsoce.Update();
                bind();
            }
        }

        protected void gdvw_RowEditing(object sender, GridViewEditEventArgs e)
        {
            gdvw.EditIndex = e.NewEditIndex;
        }

    }

(二) ##ListView和SqlDataSource结合使用

(1)配置数据源同上
(2)属性上ListView本身有启动编辑,启动删除,比GridView还多了一个启动插入,不需要添加代码,就能实现,但删除时与GridView类似出现相同的问题,同样需要我们添加代码(3)代码与GridView也类似,需要注意以下几点
1. 删除数据和数据更新中
string number = listVw.DataKeys[e.ItemIndex].Value.ToString();
2. GridView中获取要创建或绑定数据的行是通过Row而ListView中获取要创建或绑定数据的项要通过Item
3. 数据绑定中
if (e.Item.ItemType == ListViewItemType.DataItem)

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转载自blog.csdn.net/qq_41571267/article/details/79432217