C# Showing pictures from "DataGridView" on RDLC report image

Sos

5y1.2kWindows Forms

I want to display the selected image from datagridview in the image RDLC report .

I tried with this code but it doesn't work .

Not working :(

private void btnPrint_Click(object sender, EventArgs e)
{
frmPrint frm = new frmPrint();
// Datagrid opcije record set
frm.reportViewer1.LocalReport.DataSources.Clear();
frm.reportViewer1.LocalReport.ReportEmbeddedResource = "XmlView.Report1.rdlc";
frm.reportViewer1.LocalReport.EnableExternalImages = true;
DataGridViewCell dgcell = gvData.SelectedRows[0].Cells[12];
if (dgcell.Tag != null)
{
string imgCode = dgcell.Tag.ToString();
byte[] bytes = Convert.FromBase64String(imgCode);
//using (MemoryStream m = new MemoryStream(bytes)) ;
ReportParameter[] parms = new ReportParameter[1];
parms[0] = new ReportParameter("txtImage", imgCode);
frm.reportViewer1.LocalReport.SetParameters(parms);
frm.reportViewer1.RefreshReport();
frm.reportViewer1.LocalReport.Refresh();
frm.ShowDialog();
}
}

Thanks in Advance

6 Replies

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Amit Gupta5y ago
Accepted answer
Okay... Got your point.

Apply the below properties and try
In RDLC report
Click the image control and set the MIME type to image/jpeg
Set the source to Database
Set the value property from the Parameters value
Rest the souce snippet (in question) seems to be working good

Do apply above properties and do let me know, if it solves your issue

You can test your base64string from the below link
https://codebeautify.org/base64-to-image-converter

Good Luck
+2
Alem Germany5y ago
Yes, I solved it, thank you somuch.
+1
Alem Germany5y ago
My image on "datagridview" comes from an XML file that has a binary image record, when loaded into "datagridview" I convert it with this code :
private void gvData_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
        {
            if (e.ColumnIndex == 13)
            {
                DataGridViewCell dgcell = gvData.Rows[e.RowIndex].Cells[e.ColumnIndex];

                if (dgcell.Tag != null)
                {
                    string imgCode = dgcell.Tag.ToString();
                    byte[] bytes = Convert.FromBase64String(imgCode);
                    //e.Value = bytes;
                    Bitmap bmp2 = null;
                    using (MemoryStream m = new MemoryStream(bytes))
                    {
                        // //this construct is needed if we want to Close and Dispose the MemoryStream
                        Bitmap bmpTmp = new Bitmap(m);
                        bmp2 = new Bitmap(bmpTmp.GetThumbnailImage(200, 100, null, IntPtr.Zero));
                        bmpTmp.Dispose();
                        e.Value = bmp2;
                        m.Close();
                    }
                }
            }
+1
Amit Gupta5y ago
Images in your datagrid might be depicted from any file path, right? then you can directly send the path to Report parameters. Documents shown all types of putting image in report, kidly recheck with your design https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2008-r2/ms156388(v=sql.105)?redirectedfrom=MSDN
+2
Alem Germany5y ago
Yes , but your line of code uses an image from the location, in my case the image should be called from datagridview from Cells [12]
paramtr(3) = New ReportParameter("ParaCustImg", "file:///" + "C:\SKOTechLearn.jpg")
+1
Amit Gupta5y ago
Have you set the MimeType to image in rdlc. It might be not a valid bytes of image. https://www.skotechlearn.com/2019/01/pass-parameter-with-image-in-RDLC-Report-Viewer-in-ASP-Net.html?m=1
+2