c# - 选择查询 sql C# 如何将结果输出到 DataGrid

Question

如何将优化查询的结果输出到名为“customerDataGridView”的数据网格视图？

string strCon = Properties.Settings.Default.PID2dbConnectionString;

using (OleDbConnection conn = new OleDbConnection(strCon)) {
   conn.Open();
   string strSql = "SELECT  * FROM customer WHERE City =Belfast";
   OleDbDataAdapter adapter = new OleDbDataAdapter(new OleDbCommand(strSql, conn));
}

谢谢你的帮助！

Answer 1

为 ASP.Net 尝试这样的事情：

DataSet ds = new DataSet();
OleDbDataAdapter oledbAdapter = New OleDbDataAdapter(strSql, connection);
oledbAdapter.Fill(ds);
customerDataGridView.DataSource = ds.Tables(0);
customerDataGridView.DataBind();

或者对于 WinForms 是这样的：

DataSet ds = new DataSet();
OleDbDataAdapter oledbAdapter = New OleDbDataAdapter(strSql, connection);
oledbAdapter.Fill(ds);
customerDataGridView.DataSource = ds.Tables(0);

祝你好运。

Answer 2

尝试这个

DataSet ds = new DataSet();
OleDbDataAdapter oda = New OleDbDataAdapter(strSql, conn);
oda.Fill(ds);
customerDataGridView.DataSource = ds.Tables(0);

对于你不需要的 winform 控制DataBind()

Answer 3

在您的代码之后尝试以下操作：

DataTable table = new DataTable();
adapter.Fill(table);
customerDataGridView.AutoGenerateColumns = True
customerDataGridView.Datasource = table;