Solved

REREIVING IMAGE IN GRIDVIEW

Posted on 2013-11-26
2
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Last Modified: 2013-11-27
Please find the attached code.   I have a Gridview that displays and image in the Image column.   The upload function works correctly as the images are going to the "Image" folder; however, the image does not display in the Gridview.   Only a box with a black X in it.  I need assistance in resolving this issue?  


Markup Code:>>>>>>>>>>>>>>


<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>GridView Images Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:FileUpload ID="FileUpload1" runat="server"/>
        <asp:Button ID="btnUpload" runat="server" Text="Upload" OnClick="btnUpload_Click" />
    </div>
    <hr />
    <div>
    <br />
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns = "false" Font-Names = "Arial" >
            <Columns>
                <asp:BoundField DataField = "ID" HeaderText = "ID" />
                <asp:BoundField DataField = "fname" HeaderText = "Image Name" />
                <asp:ImageField DataImageUrlField = "fpath" ControlStyle-Width = "300" ControlStyle-Height = "300" HeaderText = "Preview Image"/>
            </Columns> 
        </asp:GridView>
    </div>
    </form>
</body>
</html>

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Code Behind:>>>>>>>>>>>>>>>

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        DataTable dt = new DataTable();
        String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["DB_67492_mainConnectionString"].ConnectionString;
        string strQuery = "select * from GridUpload order by ID";
        SqlCommand cmd = new SqlCommand(strQuery);
        SqlConnection con = new SqlConnection(strConnString);
        SqlDataAdapter sda = new SqlDataAdapter();
        cmd.CommandType = CommandType.Text;
        cmd.Connection = con;
        try
        {
            con.Open();
            sda.SelectCommand = cmd;
            sda.Fill(dt);
            GridView1.DataSource = dt;
            GridView1.DataBind();
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }
        finally
        {
            con.Close();
            sda.Dispose();
            con.Dispose();
        }
    }
    protected void btnUpload_Click(object sender, EventArgs e)
    {
        if (FileUpload1.PostedFile != null)
        {
            string FileName = Path.GetFileName(FileUpload1.PostedFile.FileName);

            //Save files to disk
            FileUpload1.SaveAs(Server.MapPath("~/images/" + FileName));

            //Add Entry to DataBase
            String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["DB_67492_mainConnectionString"].ConnectionString;
            SqlConnection con = new SqlConnection(strConnString);
            string strQuery = "insert into GridUpload (fname, fpath) values(@fname, @fpath)";
            SqlCommand cmd = new SqlCommand(strQuery);
            cmd.Parameters.AddWithValue("@fname", FileName);
            cmd.Parameters.AddWithValue("@fpath", "Images/" + FileName);
            cmd.CommandType = CommandType.Text;
            cmd.Connection = con;

            try
            {
                con.Open();
                cmd.ExecuteNonQuery();
            }
            catch (Exception ex)
            {
                Response.Write(ex.Message);
            }
            finally
            {
                con.Close();
                con.Dispose();
            }
        }
    }
}

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0
Comment
Question by:BOEING39
2 Comments
 
LVL 25

Accepted Solution

by:
chaau earned 500 total points
ID: 39679875
Have you checked your GridUpload  table? Is the correct path is in fpath column? I think you need to make the path in this column a relative path starting with "/", like this: "/images/image1.jpg", so this line should be:
cmd.Parameters.AddWithValue("@fpath", "/images/" + FileName);

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Try first to modify the data in the database, and then modify the code. Also, use the lower case (some web servers are case sensitive when it comes to path variables)
0
 

Author Closing Comment

by:BOEING39
ID: 39682519
Quick accurate response.
0

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