[英]passing parameter to the CRYSTAL REPORT through C# in asp.net
我是水晶報告的新手。我通過以下鏈接設計了水晶報告Crystal Report與SQL存儲過程參數和Visual Studio實際上我需要將不同的ID(SP的輸入值)傳遞給我與Crystal連接的SP報告。
這是我將ID傳遞給水晶報告的代碼:
protected void Button1_Click(object sender, EventArgs e)
{
string QuotationID = ViewState["QUOTATION_ID"].ToString();
ReportDocument reportDocument = new ReportDocument();
ParameterField paramField = new ParameterField();
ParameterFields paramFields = new ParameterFields();
ParameterDiscreteValue paramDiscreteValue = new ParameterDiscreteValue();
paramField.Name = "@id";
paramDiscreteValue.Value = QuotationID;
paramField.CurrentValues.Add(paramDiscreteValue);
paramFields.Add(paramField);
paramFields.Add(paramField);
CrystalReportViewer1.ParameterFieldInfo = paramFields;
string reportPath = Server.MapPath("~/CrystalReport.rpt");
reportDocument.Load(reportPath);
CrystalReportViewer1.ReportSource = reportDocument;
}
但是當我點擊按鈕時它會詢問ID ...
要在水晶上設置參數,我總是這樣做:
ReportDocument reportDocument = new ReportDocument();
reportDocument.Load(reportPath);
reportDocument.SetParameterValue("@id", QuotationID);
如果您想將報告轉換為pdf:
var exportOptions = reportDocument.ExportOptions;
exportOptions.ExportDestinationType = ExportDestinationType.NoDestination;
exportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
var req = new ExportRequestContext {ExportInfo = exportOptions};
var stream = reportDocument.FormatEngine.ExportToStream(req);
這將返回一個您可以從aspx頁面打開的文件流。
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