I have a web application that should display a report viewer. Here's my steps:
1) adding a script manager and a report viewer to a new web form
2) adding a report and bind it to a dataset called dataset1
3) create a parameter for the query
4) write code behind for the webform...
private DataTable GetData(Int64 id_doc)
{
DataTable dt = new DataTable();
string connStr = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionStringloginDb"].ConnectionString;
try
{
using (var conn = new MySqlConnection(connStr))
{
string sSQL = "select * from details_doc where id_doc=@id_doc";
MySqlCommand cmd = new MySqlCommand(sSQL, conn);
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add(new MySqlParameter("@id_doc", Session["id_doc"].ToString()));
MySqlDataAdapter adp = new MySqlDataAdapter(cmd);
adp.Fill(dt);
}
}
catch (Exception)
{
throw;
}
return dt;
}
protected void showReport()
{
DataTable dt = GetData(Convert.ToInt64(Session["id_doc"].ToString()));
rptViewer.LocalReport.Refresh();
rptViewer.Reset();
rptViewer.LocalReport.EnableExternalImages = true;
this.rptViewer.ProcessingMode = Microsoft.Reporting.WebForms.ProcessingMode.Local;
ReportDataSource rds = new ReportDataSource("DataSet1", dt);
rptViewer.LocalReport.DataSources.Add(rds);
rptViewer.LocalReport.ReportPath = "ReportInvoice.rdlc";
ReportParameter rptParam = new ReportParameter("ReportParameter1", Session["id_doc"].ToString());
rptViewer.LocalReport.SetParameters(rptParam);
rptViewer.LocalReport.Refresh();
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack){
if (Session["id_doc"] != null)
{
GetData(Convert.ToInt64(Session["id_doc"]));
mostraReport();
}
}
}
Now the code works just fine, but I need the report to display another , second table on it. I am going to add another data set and another report parameter, but then I got stuck regarding the code. Any help will be appreciated.
I eventually managed to pass two parameters for my report viewer. Here's how:
private DataTable GetData(Int64 id_doc)
{
DataTable dt = new DataTable();
string connStr = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionStringloginDb"].ConnectionString;
try
{
using (var conn = new MySqlConnection(connStr))
{
string sSQL = "SELECT c.*, users.*, t.*, d.* FROM head_doc h INNER JOIN doc_details d ON h.id_doc = d.id_doc INNER JOIN clients c ON c.id_client = h.id_client INNER JOIN users ON h.id_user = users.id_user WHERE (h.id_doc = @par1) AND (h.id_client = @par2)";
MySqlCommand cmd = new MySqlCommand(sSQL, conn);
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add(new MySqlParameter("@par1", Session["id_doc"].ToString()));
cmd.Parameters.Add(new MySqlParameter("@par2", Session["id_client"].ToString()));
MySqlDataAdapter adp = new MySqlDataAdapter(cmd);
adp.Fill(dt);
}
}
catch (Exception ex)
{
lblError.Text = ex.Message;
}
return dt;
}
protected void showReport()
{
DataTable DataTable1 = GetData(Convert.ToInt64(Session["id_doc"].ToString()));
report.LocalReport.Refresh();
report.Reset();
report.LocalReport.EnableExternalImages = true;
this.report.ProcessingMode = Microsoft.Reporting.WebForms.ProcessingMode.Local;
//Aggiunta dataset
ReportDataSource rds2 = new ReportDataSource("DataSet2", DataTable1);
report.LocalReport.DataSources.Add(rds2);
//Path
report.LocalReport.ReportPath = "ReportFatture.rdlc";
//Parameters
ReportParameter rptParam = new ReportParameter("par1", Session["id_doc"].ToString());
ReportParameter rptParam2 = new ReportParameter("par2", Session["id_client"].ToString());
report.LocalReport.SetParameters(rptParam);
report.LocalReport.SetParameters(rptParam2);
report.LocalReport.Refresh();
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
if ((Session["id_doc"] != null) && (Session["id_client"] != null))
{
showReport();
}
else
{
Response.Redirect("/Pages/Account/Whops.aspx");
}
}
}
I hope this helps. Thanx.