我创建了两个关系一对多的表:
[dbo].[tbParent]
[ParentID] [int] IDENTITY(1,1) NOT NULL,
[ParentName] [varchar](50) NOT NULL,
PK - ParentID
[dbo].[tbChild]
[ChildID] [int] IDENTITY(1,1) NOT NULL,
[ParentID] [int] NOT NULL,
[ChildName] [varchar](50) NOT NULL
PK - ChildID,FK - ParentID
我在数据库中创建了这两个存储过程。我想用它:
PROCEDURE [dbo].[uspUpdateData]
@ParentName NVARCHAR (50),
@ParentID INT,
@ChildName NVARCHAR (50),
@ChildID INT,
@ParentChildID INT
AS
BEGIN
SET NOCOUNT ON;
UPDATE tbParent
SET ParentName = @ParentName
WHERE ParentID = @ParentID
UPDATE tbChild
SET ChildName = @ChildName, ParentID = @ParentChildID
WHERE ChildID = @ChildID
END
和
PROCEDURE [dbo].[uspInsertData]
@ParentName NVARCHAR (50),
@ChildName NVARCHAR (50)
AS
BEGIN
SET NOCOUNT ON;
DECLARE @RowID INT
INSERT INTO tbParent (ParentName) VALUES (@ParentName)
SELECT @RowID = SCOPE_IDENTITY()
INSERT INTO tbChild (ChildName, ParentID) VALUES (@ChildName, @RowID)
END
这是我的代码:
public partial class Form1 : Form
{
public string connString = ConfigurationManager.ConnectionStrings["dbConn"].ToString();
private SqlConnection con;
private string commandString = "SELECT * FROM view_parent_child";
private SqlCommand cmd;
private SqlDataAdapter da;
private DataTable dt;
private BindingSource bindingSource1 = new BindingSource();
public Form1()
{
InitializeComponent();
BindData();
}
private void BindData()
{
con = new SqlConnection(connString);
cmd = new SqlCommand(commandString, con);
da = new SqlDataAdapter(commandString, con);
dt = new DataTable();
SqlCommandBuilder commandBuilder = new SqlCommandBuilder(da);
try
{
con.Open();
da.Fill(dt);
dataGridView1.DataSource = dt;
}
catch (SqlException ex)
{
MessageBox.Show(ex.Message);
}
finally
{
con.Close();
}
}
private void dataGridView1_RowLeave(object sender, DataGridViewCellEventArgs e)
{
//string pName = dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString();
//string cName = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
con = new SqlConnection(connString);
cmd = new SqlCommand();
da = new SqlDataAdapter(commandString, con);
dt = new DataTable();
SqlCommandBuilder commandBuilder = new SqlCommandBuilder(da);
int childIDstatus = Convert.ToInt32(dataGridView1.Rows[e.RowIndex].Cells[3].Value);
dataGridView1.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCells);
if (childIDstatus == 0)
{
try
{
con.Open();
cmd.CommandText = "uspInsertData";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@ParentName", SqlDbType.NVarChar).Value = pName;
cmd.Parameters.AddWithValue("@ChildName", SqlDbType.NVarChar).Value = cName;
cmd.Connection = con;
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
con.Close();
}
}
else
{
// here I will put the Input function
}
}
如何使该计划有效?