Question

Winform中ReportView绑定数据为什么不显示？？？？

private void Form1_Load(object sender, EventArgs e)
{
DataTable dt = GetDataTable();
ReportDataSource rds = new ReportDataSource("GPSVEHICLEDATADataSet_User", dt);
reportViewer1.LocalReport.DataSources.Clear();
reportViewer1.LocalReport.DataSources.Add(rds);
reportViewer1.LocalReport.Refresh();
}
private DataTable GetDataTable()
{
SqlConnection con = new SqlConnection("server=.;database=aaa;uid=sa;pwd=sa");
string sql = "select id,account,strName from [User]";
SqlDataAdapter da = new SqlDataAdapter(sql, con);
DataTable dt = new DataTable();
da.Fill(dt);
return dt;
}
//调试dt的Rows.count=12是有数据的。。

Answer 1

private void Form1_Load(object sender, EventArgs e)
{
DataTable dt = GetDataTable();
reportViewer1.LocalReport.DataSources=dt;
}
不行么

Answer 2

确实是没有连接上数据库

Answer 3

这。con.open();