using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace lab1
{
public partial class Form1 : Form
{
DataSet ds = new DataSet(); //holding place in memory
SqlDataAdapter daParent = new SqlDataAdapter();
SqlDataAdapter daChild = new SqlDataAdapter();
SqlConnection cs = new SqlConnection("Data Source=user-PC\\SQLEXPRESS; Initial Catalog=dede;Integrated Security=TRUE");
BindingSource ParentBS = new BindingSource();
BindingSource ChildBS = new BindingSource();
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
SqlCommand slctParent = new SqlCommand("select * from Developerss", cs); //select statement
daParent.SelectCommand = slctParent; // attaching sql command into the select command property of the data adapter Parent
daParent.Fill(ds, "Developerss"); //fullfilling the data set, calling the table Parent
SqlCommand slctChild = new SqlCommand("select * from Games", cs);
daParent.SelectCommand = slctChild;
daParent.Fill(ds,"Games");
dgParent.DataSource = ds.Tables["Developerss"];
dgChild.DataSource = ds.Tables["Games"];
dgParent.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
dgChild.SelectionMode = DataGridViewSelectionMode.FullRowSelect;//click anywhere in the table we have the whole row selected
ParentBS.DataSource = ds.Tables[0];
ChildBS.DataSource = ds.Tables[1];
textId.DataBindings.Add(new Binding("Text",ChildBS,"game_id"));
textName.DataBindings.Add(new Binding("Text", ChildBS, "game_name"));
textPlatform.DataBindings.Add(new Binding("Text", ChildBS, "game_platform"));
textDeveloperId.DataBindings.Add(new Binding("Text", ParentBS, "d_id"));
}
private void dgParent_SelectionChanged(object sender, EventArgs e)
{
ds.Tables["Games"].DefaultView.RowFilter = "developer_id = " + dgParent.CurrentRow.Cells["d_id"].Value;
//whenever the selection change on the dgparent use the value of the current row that we're on
dgChild.DataSource = ds.Tables["Games"];
}
private void addBtn_Click(object sender, EventArgs e)
{
daChild.InsertCommand = new SqlCommand("insert into Games values @id, @name, @platform, @developerId", cs);
daChild.InsertCommand.Parameters.Add("@id", SqlDbType.Int).Value = textId.Text;
daChild.InsertCommand.Parameters.Add("@name", SqlDbType.VarChar).Value = textName.Text;
daChild.InsertCommand.Parameters.Add("@platform", SqlDbType.VarChar).Value = textPlatform.Text;
daChild.InsertCommand.Parameters.Add("@developerId", SqlDbType.Int).Value = ds.Tables[0].Rows[ParentBS.Position][0];
cs.Open();
daChild.InsertCommand.ExecuteNonQuery();
cs.Close();
}
你好!
我的insert
命令有问题。我收到以下错误:
'game_id'附近的语法不正确。
是的,该列存在于数据库中。我的更新功能得到了同样的错误,但我没有在这里发布,因为我认为它必须来自相同的错误源。我有2个数据网格,一个是父级,另一个是子级。基本上我想在子表中添加新记录。
提前谢谢!
答案 0 :(得分:2)
您的INSERT
语法完全错误 - 您应该使用:
INSERT INTO dbo.Games(Co1, Col2, ..., ColN)
VALUES (@id, @name, @platform, @developerId)
首先:我建议始终明确指定要插入的列。
其次:VALUES
需要在其将插入的值列表周围加上括号。
下次请首先查看优秀,免费提供的 SQL Server文档!完全基本的东西可以轻松在网上找到 - 例如有关INSERT
语法can be found here on Technet
该文档非常详尽,它显示了所有细节,所有选项,使用它的各种方式,并且还有大量的示例代码 - 请在使用之前请使用该文档这里有这些基本问题(毕竟使用文档和查找内容是开发人员的一部分!) - 谢谢。