在GridView列中動態創建幾個CheckBox

本文轉載自查看原文 2013-04-23 10:33 3421 Generic/ FOR/ foreach/ DataRowView/ Stored Procedures/ CheckBox/ CheckBoxList/ ASP.NET/ MS SQL Server/ GridView/ ListItem/ Split/ Refactoring

怎么嵌套，我的數據庫中inputs字段是一個帶空格的字符串

我想用gridview讀出來，把info字符串變成可選的幾個復選框，因為我還想選擇這些復選框

--------------------------------------------------------------------------------------------------------------

分隔線上是某論壇一網友問及的問題。
要求也許是后期出現，剛開始時，只是讓用戶在文本框輸入Info字段信息，后期才需要顯示為CheckBox。因此最初設計是很重要，一稍沒有想好，后面的開發，就是遇上很多問題。現在Insus.NET實現網友最初要求，把字符串改為CheckBox顯示。既然改為CheckBox了，那肯定會有讓用戶選擇，有先選擇的功能，那也肯定需要存儲選擇的結果。因此Insus.NET分兩步來做，首先是把字符串顯示為CheckBox，第二步是保存選擇結果。做好這個，得先准備好數據才行。

數據庫層：

View Code

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:        Insus.NET
-- Create date: 2013-04-22
-- Description:    About save some information
-- =============================================
CREATE TABLE [dbo].[Information]
(
    [Name] NVARCHAR(15) NOT NULL PRIMARY KEY,
    [Info] NVARCHAR(100) NULl
)
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:        Insus.NET
-- Create date: 2013-04-22
-- Description:     Insert some information
-- =============================================
INSERT INTO [dbo].[Information] ([Name],[Info]) VALUES
('Name1','School city sex'),
('Name2','Age city addr'),
('Name3','City hobby'),
('Name4','')

GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:        Insus.NET
-- Create date: 2013-04-22
-- Description:    Get all information
-- =============================================
CREATE PROCEDURE [dbo].[usp_Information_GetAll]
AS
SELECT [Name],[Info] FROM [dbo].[Information]

GO

在ASP.NET層：
創建一個類別，Insus.NET.Information:

Information

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;

/// <summary>
/// Summary description for Information
/// </summary>
namespace Insus.NET
{
    public class Information
    {
        private string _Name;
        private string _Infor;

        public string Name
        {
            get { return _Name; }
            set { _Name = value; }
        }
        public string Infor
        {
            get { return _Infor; }
            set { _Infor = value; }
        }

        BusinessBase objBusinessBase = new BusinessBase();

        public Information()
        {
            //
            // TODO: Add constructor logic here
            //
        }

        public DataTable GetAll()
        {
            return objBusinessBase.GetDataToDataSet("usp_Information_GetAll").Tables[0];
        }
    }
}

創建一個網頁CheckBoxListGridViewDemo.aspx:

GridView控件，應該寫上AutoGenerateColumns="false" ，因為應用了自定義列。另外使用 OnRowDataBound="GridView1_RowDataBound"事件，將用來動態為CheckBox綁定數據。

看看CheckBoxListGridViewDemo.aspx.cs:

看看效果：

第四行有問題，就是Info值為空時，它也有一個CheckBox，解決它，加個判斷是否可行？

Ok,第一步完成，接下來是完成第二步，把用戶選擇的CheckBox存起來，還要重新顯示於GridView上。
首先在數據庫創建一個表，用於存儲。還有兩個存儲過程：

View Code

-- =============================================
-- Author:        Insus.NET
-- Create date: 2013-04-22
-- Description:    Create table save information
-- =============================================
CREATE TABLE [dbo].[MyInformation]
(
    [Name] NVARCHAR(15) NOT NULL REFERENCES [dbo].[Information] ([Name]),
    [MyInfo] NVARCHAR(100) NULl
)

GO

-- =============================================
-- Author:        Insus.NET
-- Create date: 2013-04-22
-- Description:     Save selected data
-- =============================================
CREATE PROCEDURE [dbo].[usp_MyInformation_IntUp]
(
    @Name NVARCHAR(15),
    @MyInfo NVARCHAR(100)
)
AS
IF EXISTS(SELECT TOP 1 1 FROM [dbo].[MyInformation] WHERE [Name] =  @Name)
    UPDATE [dbo].[MyInformation] SET [MyInfo] = @MyInfo  WHERE [Name] =  @Name
ELSE
    INSERT INTO [dbo].[MyInformation] ([Name],[MyInfo]) VALUES (@Name,@MyInfo)
GO


-- =============================================
-- Author:        Insus.NET
-- Create date: 2013-04-22
-- Description:     show selected data
-- =============================================
CREATE PROCEDURE [dbo].[usp_Information_Selected]
AS
SELECT i.[Name],[Info],[MyInfo] FROM [dbo].[Information] AS i
LEFT JOIN [dbo].[MyInformation] AS mi ON (i.[Name] = mi.[Name])

GO