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我有一個空白的DataGridView,沒有行或數據源設置,我需要填充它使用選擇查詢(並隱藏一些返回的列)。填充DataGridView使用SQL查詢
我已經嘗試了3種不同的代碼方法,所有這些方法都沒有錯誤,他們什麼都不做。我可以查詢數據庫並使用下面的連接字符串填充列表。
String connectionString =
"Data Source=" + Properties.Settings.Default.Sever + ";" +
"Initial Catalog=" + Properties.Settings.Default.Database + ";" +
"Integrated Security=TRUE;";
1)
public void populateDataGrid1()
{
SqlConnection cnn = new SqlConnection(connectionString);
SqlCommand sqlCmd = new SqlCommand();
sqlCmd.Connection = cnn;
sqlCmd.CommandType = CommandType.Text;
sqlCmd.CommandText = "SELECT 1,2,3,4 from X inner join Y where Z";
SqlDataAdapter sqlDataAdap = new SqlDataAdapter(sqlCmd);
DataTable dtRecord = new DataTable();
sqlDataAdap.Fill(dtRecord);
dg_Data1.DataSource = dtRecord;
}
2)
public void populateDataGrid2()
{
string select = "SELECT 1,2,3,4 from X inner join Y where Z";
SqlConnection cnn = new SqlConnection();
cnn.ConnectionString = connectionString;
SqlDataAdapter dataAdapter = new SqlDataAdapter(select, cnn);
SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter);
DataSet ds = new DataSet();
dataAdapter.Fill(ds);
dg_Data1.ReadOnly = true;
dg_Data1.DataSource = ds;
}
3)
string sql = "SELECT 1,2,3,4 from X inner join Y where Z";
using (var connection = new SqlConnection(connectionString))
using (var command = new SqlCommand(sql, connection))
using (var adapter = new SqlDataAdapter(command))
{
connection.Open();
var myTable = new DataTable();
adapter.Fill(myTable);
dg_Data1.DataSource = myTable;
}
您是否檢查過DataGridView的AutoGenerateColumns屬性?如果在某處設置爲false,則新列不會自動添加。此外,你檢查,以確保你的查詢返回任何東西? – Tombala
@Tombala啊這已修復它,該屬性不會顯示在網格的屬性列表中,但手動設置它在代碼中的負載工作,謝謝! – Vereonix