我需要从2个不同的表中填充2个组合框。这种方式不起作用。
private void client_Load(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection();
con.ConnectionString = "Data Source=.;Initial Catalog=SCP_DB;Integrated Security=True";
con.Open();
string query = "select Operation_Type from Operations_Types";
SqlDataAdapter da = new SqlDataAdapter(query, con);
DataSet ds = new DataSet();
da.Fill(ds, "Operations_Types");
comboOpType.DisplayMember = "Operation_Type";
comboOpType.ValueMember = "Operation_Type";
comboOpType.DataSource = ds.Tables["Operations_Types"];
da.Fill(ds, "Payment_Type");
comboPayType.DisplayMember = "Payment_Types";
comboPayType.ValueMember = "Payment_Types";
comboPayType.DataSource = ds.Tables["Payment_Type"];
SqlCommand cmd = new SqlCommand(query, con);
cmd.ExecuteNonQuery();
con.Close();
}
答案 0 :(得分:1)
您应该调用sql实例中的每个表,并使用TableMappings
像这样更改您的代码。
private void client_Load(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection();
con.ConnectionString = "Data Source=.;Initial Catalog=SCP_DB;Integrated Security=True";
con.Open();
string query = "select Operation_Type from Operations_Types; select ? from Payment_Type";
SqlDataAdapter da = new SqlDataAdapter(query, con);
da.TableMappings.Add("Table", "Operations_Types");
da.TableMappings.Add("Table1", "Payment_Type");
DataSet ds = new DataSet();
da.Fill(ds, "Table");
comboOpType.DisplayMember = "Operation_Type";
comboOpType.ValueMember = "Operation_Type";
comboOpType.DataSource = ds.Tables["Operations_Types"];
da.Fill(ds, "Table1");
comboPayType.DisplayMember = "Payment_Types";
comboPayType.ValueMember = "Payment_Types";
comboPayType.DataSource = ds.Tables["Payment_Type"];
SqlCommand cmd = new SqlCommand(query, con);
cmd.ExecuteNonQuery();
con.Close();
}