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GridView OnRowDataBound

Hello,

I'm trying to use the GridView OnRowDataBound Event in my CodeBehind but for some reason no data is getting added to my GridView control. I need a way to use the OnRowDataBound Event to Decrypt my data to the GridView control.

Is this possible if so can someone please show me or tell me what i"m missing in my code below??

Also, the Decryption does work when using a Label control to Decrypt to but I have 1000 + rows that I need to Decrypt and thought the GridView control would be best for that.

Thanks in advance!!!


HTML MARKUP:

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width="400px" OnRowDataBound="GridView1_RowDataBound">
            <Columns>
                <asp:BoundField DataField="admin_name" HeaderText="Name" />
                <asp:BoundField DataField="admin_address" HeaderText="Name" />
           </Columns>            
        </asp:GridView>



CODEBEHIND:

using EncryptionUtility.APress.ProAspNet.Utility;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Security;
using System.Text;

public partial class retrievedata : System.Web.UI.Page
{
    private string EncryptionKeyFile;
    protected void Page_Load(object sender, EventArgs e)
    {
        EncryptionKeyFile = Server.MapPath("key.config");
        SymmetricEncryptionUtility.AlgorithmName = "Rijndael";

        SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Admissions"].ConnectionString);

        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = "Admissions_RetrieveCollectedInfoValues";
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Connection = conn;

        try
        {
            conn.Open();

            SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);

            GridView1.DataSource = rdr;
            GridView1.DataBind();
        }

        catch
        {
        }

        finally
        {
            conn.Close();
        }
    }

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {

        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if (e.Row.DataItem != null)
            {
                DataRowView dr = (DataRowView)e.Row.DataItem;

                byte[] Address = (byte[])dr["admin_address"];
                string decryptedData = SymmetricEncryptionUtility.DecryptData(Address, EncryptionKeyFile);
            }
        }
    }
}
0
asp_net2
Asked:
asp_net2
  • 7
  • 3
1 Solution
 
AkshCommented:
Hi,

1. You may remove the CommandBehavior.CloseConnection from the constructor of the ExecuteReader(...)
OR
Try using DataSet/DataAdapter instead of DataReader.

2. Make sure your Stored Procedure returns records containing admin_name, admin_address

Check following link:
http://www.eggheadcafe.com/community/aspnet/7/10005634/datasource-of-grid-view-is-data-from-datareader.aspx




0
 
asp_net2Author Commented:
Hi Aksh,

Thank you for responding first of all. I can REALLY use the help on this one.

1.) I did remove the "CommandBehavior.CloseConnection" from the constructor of the ExecureReader but nothing changed when doing so, is the code for the OnRowDataBound okay to use if this CommandBehavior.CloseConnection is removed??

I can try to implement a DataSet/DataAdapter rather than using the DataReader and will have this done within an hour from now, but do I need to change the OnRowDataBound code if I use a DataSet/DataAdapter??

My SP does return the values.
0
 
AkshCommented:
Hi,

The implementation of the DataRowBound is inappropriate.

You first fill the grid with the data then we will tweak to DataRowBound().
0
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asp_net2Author Commented:
Hi Aksh,

Ok, I just updated my Page_Load code. Please see below.

private string EncryptionKeyFile;
    protected void Page_Load(object sender, EventArgs e)
    {
        EncryptionKeyFile = Server.MapPath("key.config");
        SymmetricEncryptionUtility.AlgorithmName = "Rijndael";

        SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Admissions"].ConnectionString);

        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = "Admissions_RetrieveCollectedInfoValues";
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Connection = conn;

        DataTable dt = new DataTable();

        SqlDataAdapter da = new SqlDataAdapter();
        da.SelectCommand = cmd;
        da.Fill(dt);

        try
        {
            conn.Open();

            GridView1.DataSource = dt;
            GridView1.DataBind();
        }

        catch
        {
        }

        finally
        {
            conn.Close();
        }
    }
0
 
AkshCommented:
Are you able to see the data in the grid?
0
 
asp_net2Author Commented:
Yes and No. When I run the application I retrieve twol columns in the GridView column one is called admin_name which displays the names in that column correctly. The second column (admin_address) is what I'm having trouble with, each value is displaying "System.Byte[]" instead of decrypting the value.

My Database structure is below.

id   int
admin_name  varchar
admin_address  varbinary
0
 
asp_net2Author Commented:
Hi Aksh,

Are you able to help with the rest?
0
 
asp_net2Author Commented:
Hi Aksh,

Are you able to help??
0
 
asp_net2Author Commented:
Hi Aksh,

Please let me know if you can continue helping. I added the code that you asked but have not heard back from you.
0
 
asp_net2Author Commented:
question was abandoned....
0

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