如何在C＃中的SQL Server数据库中保存CheckBox值

Question

我正在研究Windows窗体应用程序，我创建了一个包含房间名称，大小和LAB的房间窗体。

在数据库中的表中包含的列RoomName（varchar），Size（int），和LAB（bit）。

这是ADD_ROOM存储过程：

CREATE PROCEDURE [dbo].[ADD_ROOM] 
    @NAME_ROOM VARCHAR(50), 
    @SIZE INT, 
    @LAB BIT 
AS 
    INSERT INTO [dbo].[ROOM] ([NAME_ROOM], [SIZE], [LAB]) 
    VALUES (@NAME_ROOM, @SIZE, @LAB) 

这里是ADD_ROOM.cs：

class CLS_ADD_ROOM 
{ 
     public void ADD_ROOM(string NAME_ROOM,int SIZE,Boolean LAB) 
     { 
      DAL.DataAccessLayer DAL = new DAL.DataAccessLayer(); 
      DAL.Open(); 
      SqlParameter[] param = new SqlParameter[3]; 

      param[0] = new SqlParameter("@NAME_ROOM", SqlDbType.VarChar, 50); 
      param[0].Value = NAME_ROOM; 

      param[1] = new SqlParameter("@SIZE", SqlDbType.Int); 
      param[1].Value = SIZE; 

      param[2] = new SqlParameter("@LAB", SqlDbType.Bit); 
      param[2].Value = LAB; 

      DAL.ExecuteCommand("ADD_ROOM", param); 
      DAL.Close(); 
     } 

     public void UPDATE_ROOM(string ID_ROOM, string NAME_ROOM, int SIZE, bool LAB) 
     { 
      DAL.DataAccessLayer DAL = new DAL.DataAccessLayer(); 
      DAL.Open(); 

      SqlParameter[] param = new SqlParameter[4]; 
      param[0] = new SqlParameter("@ID_ROOM", SqlDbType.Int); 
      param[0].Value = ID_ROOM; 

      param[1] = new SqlParameter("@NAME_ROOM", SqlDbType.VarChar, 50); 
      param[1].Value = NAME_ROOM; 

      param[2] = new SqlParameter("@SIZE", SqlDbType.Int); 
      param[2].Value = SIZE; 

      param[3] = new SqlParameter("@LAB", SqlDbType.Bit); 
      param[3].Value = LAB; 

      DAL.ExecuteCommand("UPDATE_ROOM", param); 
      DAL.Close(); 
     } 

而在ADD ROOM FORM

private void button1_Click(object sender, EventArgs e) 
{ 
    ROOM.ADD_ROOM(TXT_ROOM_NAME.Text, Convert.ToInt32(TXT_ROOM_SIZE.Text), Convert.ToBoolean(CHECK_LAB.CheckState)); 

    MessageBox.Show(" The Room has been added successfully", "ADD PROCEDURE", MessageBoxButtons.OK, MessageBoxIcon.Information); 
    this.dataGridView1.DataSource = ROOM_VIEW.GET_ALL_ROOMS(); 
} 

后面按钮ADD Room代码和错误是

输入字符串的不正确的格式

Answer 1

在你的C＃代码，则应更换Convert.ToBoolean(CHECK_LAB.CheckState)与CHECK_LAB.Checked - 这是与定义布尔复选框是否被选中：

private void button1_Click(object sender, EventArgs e) 
{ 
    ROOM.ADD_ROOM(TXT_ROOM_NAME.Text, 
        Convert.ToInt32(TXT_ROOM_SIZE.Text), 
        CHECK_LAB.Checked); 

    MessageBox.Show(" The Room has been added successfully", "ADD PROCEDURE", MessageBoxButtons.OK, MessageBoxIcon.Information); 
    this.dataGridView1.DataSource = ROOM_VIEW.GET_ALL_ROOMS(); 
} 

的CheckState属性不布尔属性 - 它是一个三个可能的值：

• CheckState.Checked
• CheckState.Unchecked
• CheckState.Indeterminate

Answer 2

不知道，但是这可能是值得一试。在ADD_ROOM.cls：布尔的

param[2] = new SqlParameter("@LAB", SqlDbType.Bit); 
param[2].Value = LAB ? 1 : 0; // <---- CHANGE THIS LINE 

值作为参数可被转换成0或1以外的内容，这是由SQL服务器的预期。

Answer 3

谢谢你这么多家伙..问题就解决了:)

我改变了ADD_ROOM.cls指令：

class CLS_ADD_ROOM 
    { 
     public void ADD_ROOM(string NAME_ROOM,int SIZE,int LAB)// <=== Change bool to int 
    { 
      DAL.DataAccessLayer DAL = new DAL.DataAccessLayer(); 
      DAL.Open(); 
      SqlParameter[] param = new SqlParameter[3]; 

      param[0] = new SqlParameter("@NAME_ROOM", SqlDbType.VarChar, 50); 
      param[0].Value = NAME_ROOM; 

      param[1] = new SqlParameter("@SIZE", SqlDbType.Int); 
      param[1].Value = SIZE; 

      param[2] = new SqlParameter("@LAB", SqlDbType.Bit); //<=== keep it .bit 
      param[2].Value = LAB ; 


      DAL.ExecuteCommand("ADD_ROOM", param); 
      DAL.Close(); 
      } 

而在ADD_ROOM表格中添加此条件：

private void button1_Click(object sender, EventArgs e) 
     {    

if (CHECK_LAB.Checked) 
{ 

ROOM.ADD_ROOM(TXT_ROOM_NAME.Text,int.Parse(TXT_ROOM_SIZE.Text),Convert.ToInt32(1)); 

} 
    else 
{ 

    ROOM.ADD_ROOM(TXT_ROOM_NAME.Text, Convert.ToInt32(TXT_ROOM_SIZE.Text), Convert.ToInt32(0));    }