ReportView显示本地报表

from:http://www.cnblogs.com/duanshuiliu/archive/2012/07/13/2589862.html

使用ReportView控件可以显示远端Report service的报表，也可以处理生成本地报表，用法也比较简单，下面列举一下简单的步骤。

首先使用Report Wizard添加一个rdlc报表文件到工程项目，使用这个wizard会自动创建报表使用的DataSet等，其实这些后面都可以用自己的DataSource来替换掉。设计好一个Table的报表，在报表中添加FromDate和ToDate两个参数，然后添加两个TextBox在报表上显示这两个参数的值。

然后添加一个ReportView控件到Form，在一个按钮事件中来初始化和刷新报表：

1 private void button1_Click(object sender, EventArgs e)

2 {
3 reportViewer1.LocalReport.ReportEmbeddedResource = "ReportsApplication1.Report1.rdlc";
4
5 ReportDataSource reportDataSource= new ReportDataSource();
6 reportDataSource.Name = "MESDBDataSet_ProdFinish";
7 reportDataSource.Value = getProdFinishTable();
8 reportViewer1.LocalReport.DataSources.Clear();
9 reportViewer1.LocalReport.DataSources.Add(reportDataSource);

ReportParameter fromParam= new ReportParameter("FromDate",dateTimePicker1.Value.ToShortDateString());
ReportParameter toParam = new ReportParameter("ToDate", dateTimePicker1.Value.ToShortDateString());

reportViewer1.LocalReport.SetParameters(new ReportParameter[]{fromParam,toParam});
reportViewer1.RefreshReport();
}

private DataTable getProdFinishTable()
{

SqlConnection connection= new SqlConnection(Properties.Settings.Default.MESDBConnectionString);
connection.Open();
string sql = "select * from prodfinish where proddate>=@fromdate and proddate<dateadd(day,1,@todate)";
SqlDataAdapter adapter= new SqlDataAdapter(sql,connection);
adapter.SelectCommand.Parameters.AddWithValue("fromdate",dateTimePicker1.Value.Date);
adapter.SelectCommand.Parameters.AddWithValue("todate", dateTimePicker2.Value.Date);
DataTable dataTable = new DataTable();
adapter.Fill(dataTable);
connection.Close();
return dataTable;
}