我的RDLC设计:

我想在我的报告查看器上显示来自我的数据库的图像,我的报告查看器工作得很好,我只需要为每个选择提供一个图像,并且我已经在我的数据库中为每个患者提供了图像,我只想显示在我的.aspx页面中,我还附加了下面的代码。
我的Aspx页面:
<body >
<form id="form1" runat="server">
<div class="auto-style1">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<table class="auto-style2">
<tr>
<td class="auto-style5">
<asp:Label ID="Label1" runat="server" CssClass="auto-style4"
Text="Patient Report"></asp:Label>
<asp:DropDownList ID="DropDownPat" runat="server" Height="16px"
Width="157px" AutoPostBack="True"
OnSelectedIndexChanged="DropDownPat_SelectedIndexChanged">
<asp:ListItem></asp:ListItem>
</asp:DropDownList>
</tr>
<tr>
<td class="auto-style3">
<rsweb:ReportViewer ID="ReportViewer1" runat="server" Font-Names="Verdana" Font-Size="8pt" Height="205px" WaitMessageFont-Names="Verdana" WaitMessageFont-Size="14pt" Width="751px">
<LocalReport ReportPath="Report1.rdlc">
<DataSources>
<rsweb:ReportDataSource DataSourceId="ObjectDataSource1" Name="DataSet1" />
</DataSources>
</LocalReport>
</rsweb:ReportViewer>
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetData" TypeName="MedImage.DataSet1TableAdapters.DataTable1TableAdapter"></asp:ObjectDataSource>
</td>
</tr>
</table>
</div>
</form>
</body>我的.cs文件:我想在我的数据库的报表查看器上显示图像
aspx页面背后的代码在这里
public partial class PatientReport : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
populateDropDownPat();
}
}
private void populateDropDownPat()
{
try
{
patientCollection pcal = (new patientBAL()).GetAllDetailspatient();
DropDownPat.DataSource = null;
DropDownPat.DataSource = pcal;
DropDownPat.DataTextField = "patientName";
DropDownPat.DataValueField = "PatientID";
DropDownPat.DataBind();
DropDownPat.Items.Insert(0, new ListItem("--Select Patient--"));
}
catch(Exception ex)
{
}
}
protected void DropDownPat_SelectedIndexChanged(object sender, EventArgs e)
{
string name = DropDownPat.SelectedItem.Text;
patientCollection pcal = (new
patientBAL()).GetDetailsByPatientName(name);
ReportViewer1.Visible = true;
this.ReportViewer1.LocalReport.EnableExternalImages = true;
this.ReportViewer1.LocalReport.ReportPath = "Report1.rdlc";
ReportViewer1.LocalReport.DataSources.Clear();
ReportDataSource rds = new ReportDataSource("DataSet1", pcal);
this.ReportViewer1.LocalReport.DataSources.Add(rds);
this.ReportViewer1.LocalReport.Refresh();
}
}发布于 2017-08-31 14:31:58
显示数据库中的图像非常容易。在image属性上,将源设置为数据库,并将包含byte[]图像的值设置为dataset字段。

发布于 2018-10-18 14:42:11
用于存储Image的数据类型
varbinary(MAX)
byte[] bytes;
using (BinaryReader br = new BinaryReader(photo.PostedFile.InputStream))
{
bytes = br.ReadBytes(photo.PostedFile.ContentLength);
}
SqlCommand cmd = new SqlCommand("insert into img values('@harikesh')", cn);
cn.Open();
cmd.Parameters.AddWithValue("@harikesh", bytes);
int i = cmd.ExecuteNonQuery();
if (i > 0)
{
Response.Write("<script language='javascript'>alert('inserted sucess')</script>");
}
else
{
Response.Write("<script language='javascript'>alert('NOT sucess')</script>");
}
cn.Close();`-在报表视图上查看图像
.xsd文件System.Byte[]中的图像数据类型
https://stackoverflow.com/questions/45959148
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