Images not displayed when loading the image from the database

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I am using the grid view control to load the image from the database.
I am using an Item Template inside a grid view control. However a wrong url is formed ie. /Image/System.byte[] when binding it to the image control. The datatype of the image
is image in the database.
System.byte[] is the data I am getting when getting the image of the product. I do not want to use any handler for the same.
How do I bind the image to the image control . This is my code.

What I have tried:

The following is the .aspx code
 <asp:TableRow ID="imagerow" runat="server">
    <asp:TableCell>
         <asp:Image ID="productimage" runat="server"
         ImageUrl='<%# Eval("ProductImage","~/Image/{0}") %>'Height="30px" Width="40px" />
    </asp:TableCell>
 </asp:TableRow>


The following is the .cs code

    try
    {
       using (SqlConnection connect = new SqlConnection(cs))
       {
          using (SqlCommand scmd = new SqlCommand("SELECT  * FROM Products", connect))
          {
               using (SqlDataAdapter da = new SqlDataAdapter(scmd))
               {
                   using (DataSet ds = new DataSet())
                   {
                                connect.Open();
                                da.Fill(ds);
                                gridviewproducts.DataSource = ds;
                                gridviewproducts.DataBind();
                                connect.Close();
                   }
               }
           }
       }
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.Message);
    }

Posted 30-Jul-20 16:26pm

Member 14872744

Updated 30-Jul-20 16:38pm

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Sandeep Mewara · Accepted Answer · 2020-07-30T16:38:00

You need to convert the byte array into image during RowDataBound. Something like:

C#

protected void grd_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if(e.Row.RowType==DataControlRowType.DataRow)
        {
            System.Web.UI.HtmlControls.HtmlImage imageControl = (System.Web.UI.HtmlControls.HtmlImage)e.Row.FindControl("imageControl");
            if (((DataRowView)e.Row.DataItem)["imagedata"] != DBNull.Value)
            {
                imageControl.Src = "data:image/png;base64," + Convert.ToBase64String((byte[])(((DataRowView)e.Row.DataItem))["imagedata"]);
            }
        }
    }

Here, have a look:
Display images from SQL Server Database in ASP.Net GridView control[^]

UPDATE:

ASP.NET

<asp:GridView runat="server"  ID="grd" OnRowDataBound ="grd_RowDataBound"  >
                <Columns>
                    <asp:TemplateField HeaderText="image">
                        <ItemTemplate>
                          <img src='<%# Eval("imagedata") %>' id="imageControl" runat="server" />
                        </ItemTemplate>   
                    </asp:TemplateField> 
                </Columns>
            </asp:GridView>