Formatting GridView for Export to Excel

Hello,

I have set up a "Download Excel" button on my Web Form containing a data bound GridView. I've managed to change the formatting to an extent before rendering the control for Excel. However, I have hit a wall. I still need to remove the URLs that are being passed to the spreadsheet. The header still maintains the PostBack scripting for the sorting of columns even though I set sorting and paging to "false" at runtime before rendering. And a column is still containing the URL "DataNavigateUrlFormatString" for a details page. I need the spreadsheet to just house the data and nothing else.

Below is the code I have so far: (BTW, i LOVE the fact I don't need a second page to do this like classic ASP!!)

    public override void VerifyRenderingInServerForm(Control control)
    {
    }

    protected void ExcelButton_Click(object sender, ImageClickEventArgs e)
    {
        GridView1.AllowPaging = false;
        GridView1.AllowSorting = false; // THIS IS NOT WORKING
        GridView1.AlternatingRowStyle.ForeColor = Color.FromName("#ffffff");
        GridView1.HeaderStyle.BackColor = Color.FromName("#ffffff");
        GridView1.HeaderStyle.ForeColor = Color.FromName("#000000"); // THIS IS NOT WORKING
        GridView1.HeaderStyle.Font.Bold = true; // THIS IS NOT WORKING
        GridView1.BorderColor = Color.FromName("none");

        Response.ClearHeaders();
        Response.ContentType = "application/vnd.ms-excel";
        Response.Charset = "";
        Page.EnableViewState = false;
        System.IO.StringWriter sWriter = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(sWriter);

        GridView1.RenderControl(hw);

        string sContent = sWriter.ToString();
        Response.Clear();
        string filename = "conversions.xls";
        Response.AddHeader("Content-Disposition", "FileName = " + filename);
        Response.Write(sContent);
        Response.End();

    }

HangTenDesignAsked:
Who is Participating?
 
salan_alaniConnect With a Mentor Commented:
I gave you one of my examples. Actually, I don't know how your GridView is built, for me I bind the GridView control within the code-behind (not within the ASPX code). So whenever I want to change the formatting (any formatting changes) I need to re-DataBind the GridView againg. My code is not big, but sometimes the formatting will not take action unless you re-DataBind the GridView again.
0
 
salan_alaniCommented:
The below code works for me:

ASPX code:

<body>
    <form id="form1" runat="server">    
        <asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333"
            GridLines="None" AllowPaging="True" OnPageIndexChanging="GridView1_PageIndexChanging" AllowSorting="True">
            <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
            <RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
            <SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />
            <PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" />
            <HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
            <AlternatingRowStyle BackColor="White" />
        </asp:GridView>
        <br />
        <asp:Button ID="btnExcel" runat="server" Text="Download Excel" OnClick="btnExcel_Click" />
    </form>
</body>


C# code behind:

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            string DateI = "TO_DATE('05/12/2005','DD/MM/YYYY')";
            string sql = "SELECT BSC,SEG_ID,SEG,CI,NCC,BCC,LAC,DTX,MS_PMAX1,MS_PMAX2,DMAX,FRL,FRU,GENA,NSEI FROM SEG_PAR WHERE DATEI=" + DateI + " ORDER BY BSC,SEG";

            DataSet dsNetwork = new DataSet();
            OracleConnection MyConnection = new OracleConnection("Data Source=orcl;Persist Security Info=True;User ID=FCCI_BH;Password=fcciadmin;Unicode=True");
            OracleDataAdapter daNetwork = new OracleDataAdapter(sql, MyConnection);
            daNetwork.Fill(dsNetwork, "dtNetwork");

            GridView1.DataMember = "dtNetwork";
            GridView1.DataSource = dsNetwork;            
            GridView1.DataBind();

            daNetwork.Dispose();
            dsNetwork.Dispose();
            MyConnection.Dispose();
        }
    }

    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        if (GridView1.EditIndex != -1)
        {
            e.Cancel = true;
        }
        else
        {
            string DateI = "TO_DATE('05/12/2005','DD/MM/YYYY')";
            string sql = "SELECT BSC,SEG_ID,SEG,CI,NCC,BCC,LAC,DTX,MS_PMAX1,MS_PMAX2,DMAX,FRL,FRU,GENA,NSEI FROM SEG_PAR WHERE DATEI=" + DateI + " ORDER BY BSC,SEG_ID";

            DataSet dsNetwork = new DataSet();
            OracleConnection MyConnection = new OracleConnection("Data Source=orcl;Persist Security Info=True;User ID=FCCI_BH;Password=fcciadmin;Unicode=True");
            OracleDataAdapter daNetwork = new OracleDataAdapter(sql, MyConnection);
            daNetwork.Fill(dsNetwork, "dtNetwork");

            GridView1.DataMember = "dtNetwork";
            GridView1.DataSource = dsNetwork;
           
            GridView1.PageIndex = e.NewPageIndex;            
           
            GridView1.DataBind();

            daNetwork.Dispose();
            dsNetwork.Dispose();
            MyConnection.Dispose();            
        }
    }

    public override void VerifyRenderingInServerForm(Control GridView1)
    {
        // Do nothing
    }

    protected void btnExcel_Click(object sender, EventArgs e)
    {
        GridView1.AllowPaging = false;
        GridView1.AllowSorting = false;

        GridView1.RowStyle.ForeColor = Color.FromName("#000000");
        GridView1.RowStyle.BackColor = Color.FromName("none");
        GridView1.AlternatingRowStyle.ForeColor = Color.FromName("#000000");
        GridView1.AlternatingRowStyle.BackColor = Color.FromName("none");
        GridView1.HeaderStyle.Font.Bold = true;
        GridView1.HeaderStyle.ForeColor = Color.FromName("#000000");        
        GridView1.HeaderStyle.BackColor = Color.FromName("none");
        GridView1.BorderColor = Color.FromName("#000000");
        GridView1.GridLines = GridLines.Both;        
       
        string DateI = "TO_DATE('05/12/2005','DD/MM/YYYY')";
        string sql = "SELECT BSC,SEG_ID,SEG,CI,NCC,BCC,LAC,DTX,MS_PMAX1,MS_PMAX2,DMAX,FRL,FRU,GENA,NSEI FROM SEG_PAR WHERE DATEI=" + DateI + " ORDER BY BSC,SEG";

        DataSet dsNetwork = new DataSet();
        OracleConnection MyConnection = new OracleConnection("Data Source=orcl;Persist Security Info=True;User ID=FCCI_BH;Password=fcciadmin;Unicode=True");
        OracleDataAdapter daNetwork = new OracleDataAdapter(sql, MyConnection);
        daNetwork.Fill(dsNetwork, "dtNetwork");

        GridView1.DataMember = "dtNetwork";
        GridView1.DataSource = dsNetwork;
        GridView1.DataBind();

        daNetwork.Dispose();
        dsNetwork.Dispose();
        MyConnection.Dispose();


        Response.Clear();
        Response.AddHeader("content-disposition", "attachment;filename=SEG.xls");
        Response.Charset = "";
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.ContentType = "application/vnd.xls";
        System.IO.StringWriter stringWrite = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
        GridView1.RenderControl(htmlWrite);
        Response.Write(stringWrite.ToString());
        Response.End();
    }
}


More details:
http://forums.asp.net/1/986762/ShowThread.aspx (not the same request, but the discussion will pass through it)
http://gridviewguy.com

0
 
HangTenDesignAuthor Commented:
Sorry, I'm not exactly sure what you are saying works for you in all that code. Can you elaborate on how your code differs from my example above and what I should do to eliminate the URLs from the GridView control??? Simply setting sorting to false is not doing it for me.
0
 
HangTenDesignAuthor Commented:
THAT WAS EXACTLY IT!!!!!  Rebind the data. Thank you SO much.
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.