【发布时间】：2018-02-22 07:35:37
【问题描述】：
我有一个在报表查看器中显示报表服务器 RDL 报表的现有代码。我提示用户输入，然后将其作为参数传递给 Sql Server 中的存储过程。
报告正确生成为带有硬编码文本框数量的概念证明，但显然并非所有报告都具有相同数量的参数。所以这是我的工作代码和屏幕截图：
ASP.NET
<%@ Page Language="C#" Trace="true" AutoEventWireup="true" CodeBehind="Reports.aspx.cs" Inherits="FormsAuthAd.Reports" %>
<%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" class="reports-body">
<head runat="server">
<title>Reports</title>
<link href="../css/Style.css" rel="stylesheet" />
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<div class="params-container container">
<asp:TextBox ID="txtStart" runat="server" placeholder="From Date" class="input-fields"></asp:TextBox>
<asp:TextBox ID="txtEnd" runat="server" placeholder="To Date" class="input-fields"></asp:TextBox>
<asp:TextBox ID="txtBrand" runat="server" placeholder="Brand" class="input-fields"></asp:TextBox>
<asp:TextBox ID="txtSeason" runat="server" placeholder="Season" class="input-fields"></asp:TextBox>
<asp:TextBox ID="txtComp" runat="server" placeholder="Company" class="input-fields"></asp:TextBox>
<asp:TextBox ID="txtLoc" runat="server" placeholder="Location" class="input-fields"></asp:TextBox>
<asp:TextBox ID="txtLine" runat="server" placeholder="Line" class="input-fields"></asp:TextBox>
<asp:Button ID="btnShow" runat="server" OnClick="Button1_Click" Text="Generate" class="input-fields"/>
</div>
<div class="rpt-container container">
<rsweb:ReportViewer ID="rptVwr" runat="server" CssClass="rpt-viewer"></rsweb:ReportViewer>
</div>
</form>
</body>
</html>
代码隐藏
private void showReport()
{
rptVwr.Reset();
DataTable dt = GetData(txtStart.Text, txtEnd.Text, txtBrand.Text, txtSeason.Text, txtComp.Text, txtLoc.Text);
rptVwr.Visible = true;
ReportDataSource rds = new ReportDataSource("DataSet2", dt);
rptVwr.LocalReport.DataSources.Add(rds);
rptVwr.LocalReport.ReportPath = "../ReportServer/StockExport.rdl";
ReportParameter[] rptParams = new ReportParameter[]
{
new ReportParameter("StartDate",txtStart.Text),
new ReportParameter("EndDate",txtEnd.Text),
new ReportParameter("Brand",txtBrand.Text),
new ReportParameter("Season",txtSeason.Text),
new ReportParameter("Company",txtComp.Text),
new ReportParameter("Store",txtLoc.Text),
};
rptVwr.LocalReport.SetParameters(rptParams);
rptVwr.LocalReport.Refresh();
}
private DataTable GetData(string fromDate, string toDate, string brandCode, string seasonCode, string compCode, string locCode)
{
DataTable dt = new DataTable();
string connStr = System.Configuration.ConfigurationManager.ConnectionStrings ["ReportServerConnStr"].ConnectionString;
using (SqlConnection cn = new SqlConnection(connStr))
{
SqlCommand cmd = new SqlCommand("sp_valueEntryStock", cn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@StartDate", SqlDbType.NVarChar).Value = fromDate;
cmd.Parameters.Add("@EndDate", SqlDbType.NVarChar).Value = toDate;
cmd.Parameters.Add("@Season", SqlDbType.NVarChar).Value = seasonCode;
cmd.Parameters.Add("@Brand", SqlDbType.NVarChar).Value = brandCode;
cmd.Parameters.Add("@Company", SqlDbType.NVarChar).Value = compCode;
cmd.Parameters.Add("@Store", SqlDbType.NVarChar).Value = locCode;
cmd.CommandTimeout = 1000;
SqlDataAdapter adp = new SqlDataAdapter(cmd);
adp.Fill(dt);
}
return dt;
}
protected void Button1_Click(object sender, EventArgs e)
{
showReport();
}
显然，我不想要硬编码的文本框数量，因此我调整了代码以根据 Sql Server 中的表在页面加载时动态添加文本框。这是我现有的代码和屏幕截图：
Page after submitting parameters
代码隐藏
protected void Page_Load(object sender, EventArgs e)
{
using (SqlConnection con = new SqlConnection(connStr))
{
using (SqlCommand cmd = new SqlCommand("SELECT [FieldNum],[FieldName],[AspId],[SqlParameter] FROM [MIS_FieldsMaster]", con))
{
cmd.CommandType = CommandType.Text;
SqlDataAdapter adp = new SqlDataAdapter(cmd);
adp.Fill(dtable);
int i = 0;
foreach (DataRow dr in dtable.Rows)
{
TextBox tb = new TextBox();
tb.ID = dr["AspId"].ToString().Trim();
stringArray[i] = dr["SqlParameter"].ToString().Trim();
tb.Text = stringArray[i];
ph1.Controls.Add(tb);
i++;
}
}
}
}
private void showReport()
{
rptVwr.Reset();
DataTable dt = GetData();
rptVwr.Visible = true;
ReportDataSource rds = new ReportDataSource("DataSet2", dt);
rptVwr.LocalReport.DataSources.Add(rds);
rptVwr.LocalReport.ReportPath = "../ReportServer/StockExport.rdl";
rptVwr.LocalReport.Refresh();
}
private DataTable GetData()
{
DataTable dt = new DataTable();
int i = 0;
string connStr = System.Configuration.ConfigurationManager.ConnectionStrings["ReportServerConnStr"].ConnectionString;
using (SqlConnection cn = new SqlConnection(connStr))
{
SqlCommand cmd = new SqlCommand("sp_valueEntryStock", cn);
cmd.CommandType = CommandType.StoredProcedure;
foreach (TextBox textBox in ph1.Controls.OfType<TextBox>())
{
cmd.Connection = cn;
cmd.Parameters.AddWithValue("@" + stringArray[i], textBox.Text);
i++;
}
cmd.CommandTimeout = 1000;
SqlDataAdapter adp = new SqlDataAdapter(cmd);
adp.Fill(dt);
}
return dt;
}
protected void Button1_Click(object sender, EventArgs e)
{
showReport();
}
所以它甚至没有向我显示任何错误消息，所以我真的不知道在哪里看。我调试了新代码，我相信它正在检索存储过程中的数据，因为局部变量显示在数据表 dt 下检索到的行。唯一的问题是报告没有显示在reportViewer 中。它甚至不显示报告工具栏。
Row retrieved from datatable dt
我将非常感谢任何帮助。谢谢。
【问题讨论】：
标签： c# asp.net sql-server report reportserver