C# 如何从多个表到GridView使用数据源

对不起，我想做这样的布局：

数据库结构如下所示： 我想使用select查询从两个表加载数据，并将数据显示到gridview。。 到目前为止，我在互联网上找到了教程，但使用的是单表。。

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请给我一些建议……

你应该试试这样的东西

 string query = @"SELECT * FROM Sales_so
  Inner join Com_customer on COM_Customer.Com_customer_id = Sales_SO.Com_customer_Id";
 Connection con = new Connection();
 SqlDataAdapter dataAdapter = new SqlDataAdapter(query, con);

 SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter);
 DataSet ds = new DataSet();
 dataAdapter.Fill(ds);
 dataGridView1.ReadOnly = true; 
 dataGridView.DataSource = ds.tables[0];

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你应该试试这样的东西

 string query = @"SELECT * FROM Sales_so
  Inner join Com_customer on COM_Customer.Com_customer_id = Sales_SO.Com_customer_Id";
 Connection con = new Connection();
 SqlDataAdapter dataAdapter = new SqlDataAdapter(query, con);

 SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter);
 DataSet ds = new DataSet();
 dataAdapter.Fill(ds);
 dataGridView1.ReadOnly = true; 
 dataGridView.DataSource = ds.tables[0];

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编写连接3个表的查询，将结果放入dataSet，然后将此dataSet设置为网格的DataSource

SqlCommand cmd = new SqlCommand();
cmd.ConnectionString = "your connection";
cmd.CommandText = @"
SELECT 
    so.* -- WRITE Here columns which you need from the tables. 
FROM
    SALES_SO so
INNER JOIN
     SALES_SO_LITEM soItem ON soItem.SALES_SO_ID = so.SALES_SO_ID
INNER JOIN
     COM_CUSTOMER cus ON cus.COM_CUSTOMER_ID = so.COM_CUSTOMER_ID
";

DataSet resultDst = new DataSet();
using (SqlDataAdapter adapter = new SqlDataAdapter(cmd))
{
    adapter.Fill(resultDst, defaultTable);

}

grid.DataSource = resultDst.Tables[0];
grid.DataBind();

---

您需要这样的东西

编写连接3个表的查询，将结果放入dataSet，然后将此dataSet设置为网格的DataSource

SqlCommand cmd = new SqlCommand();
cmd.ConnectionString = "your connection";
cmd.CommandText = @"
SELECT 
    so.* -- WRITE Here columns which you need from the tables. 
FROM
    SALES_SO so
INNER JOIN
     SALES_SO_LITEM soItem ON soItem.SALES_SO_ID = so.SALES_SO_ID
INNER JOIN
     COM_CUSTOMER cus ON cus.COM_CUSTOMER_ID = so.COM_CUSTOMER_ID
";

DataSet resultDst = new DataSet();
using (SqlDataAdapter adapter = new SqlDataAdapter(cmd))
{
    adapter.Fill(resultDst, defaultTable);

}

grid.DataSource = resultDst.Tables[0];
grid.DataBind();

---

您需要这样的东西

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