Create DataGrid from Excel File - ASP.NET Discussion Boards

Session variable work very well for this. You should be able to find plenty of articles on the use of session variables. It should work something like this.
Login - The user enters there details into a couple of textboxes
Validate - You get the details from the textbox and check them against a database containing all login info.
Set session variables. - You set the session variables up. Eg one called Username to hold the users name, one called usergroup to hold the group the user is in ( to determine permissions)
Forward User - forward the user to the page they should see after login

Then on every page that needs to validate the user, add to the Page load event a script that gets the users group setting from the session variable. Usually the best way to run through permissions would be to use a select statment (vb) or switch statement (c#), which would perform different setups depending on the users group setting. Usually this would be done using the visible attribute of each control required for the user.

I hope that makes sense. I did kind of rush what is quite a complex subject.

One other things. If you want to save time and coding when validating a user into each page, place the code that performs this in a masterpage. Obviously this will only work for global requirements, but in a scenario with a menu this is perfect.

Sam Heller wrote:
If you want to save time and coding when validating a user into each page, place the code that performs this in a masterpage.

Why not use the Login Control and/or Forms Authentication that is built in? Easier than trying to re-invent the wheel.

only two letters away from being an asset

Hi,

I am a novice to the Ajax world. I am currently working on ASP.net 1.1 with C#.

I would like to add Ajax features to my app.

There seems to be a lot of options to pick from. I am not clear what works with ASP.Net 1.1 version too.

My main objectives are:

1. Has to work with ASP.NET 1.1
2. I dont want to write the generic portion of Javascript.
[I don't mind writing code for my own functionality. But I would like to have pre-built generic function(with documentation).]
3. I want a mature framework that has been tested well on other apps with common issues resolved.
4. Cross-Browser support for commonly used browsers .(IE, Firefox , Opera, Safari) .
5. I am seeing a lot Ajax container implementation.
What is the advantage/limilation of using an Ajax container vs an Ajax Framework.

Can someone help me to decide what framework/approach I should take.

Many thanks.

http://www.codeproject.com/Ajax/IntroAjaxASPNET.asp[^]

Are you sure you can use Atlas with version 1.1. I was under the impression it would only work with version 2.0???????

Hey,

Having some issues catching events from a Datalist. The main reason for this is due to the Datalist being embedded inside another datalist. I can grab all the events from the Outer Datalist no problems(one of which hides and shows the inner data list). I have a save button and some checkboxes in the inner datalist and need to catch all of their relvant events.

Any Ideas? I dont even know where to start on this?
Here is the page code
Thanks

<asp:DataList ID="OuterDataList" runat="server" DataSourceID="XmlDataSource1" OnSelectedIndexChanged="OuterDataList_SelectedIndexChanged" ><br />
    <ItemTemplate><br />
        <table style="border:solid 1px #CCCCCC;background-color:#EBEBEB;margin:5px 0px;"><br />
            <tr><br />
                <td style="padding:3px;width:700px;"><br />
                    <h2><%#DataBinder.Eval(Container.DataItem, "Month")%></h2><br />
                </td><br />
                <td><br />
                    <asp:ImageButton ID="ArrowImageButton" runat="server" CommandName="ShowOrHide" ImageUrl="../images/icons/Down%20Arrow%2016%20h%20g.gif" /><br />
                </td><br />
            </tr><br />
            <tr><br />
                <td colspan="2"><br />
                    <asp:DataList ID="InnerDataList" runat="server" DataSourceID="XmlDataSource2" Visible="false" CssClass="InnerDataList"><br />
                        <HeaderTemplate><br />
                            <table><br />
                                <tr><br />
                                    <th style="width:120px;"><br />
                                        Lead<br />
                                    </th><br />
                                    <th style="width:120px;"><br />
                                        Ammount<br />
                                    </th><br />
                                    <th style="width:120px;"><br />
                                        Date<br />
                                    </th><br />
                                    <th style="width:350px;"><br />
                                    </th><br />
                                    <th style="width:60px;"><br />
                                        Paid<br />
                                    </th><br />
                                </tr><br />
                        </HeaderTemplate><br />
                        <ItemTemplate><br />
                                <tr><br />
                                    <td style="width:120px;"><br />
                                        <asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%#DataBinder.Eval(Container.DataItem, "Lead", "Lead.aspx?LID={0}")%>' style="color:Blue;"><%#DataBinder.Eval(Container.DataItem, "Lead")%></asp:HyperLink><br />
                                    </td><br />
                                    <td style="width:120px;"><br />
                                        <%#DataBinder.Eval(Container.DataItem, "Ammount", "£{0}")%><br />
                                    </td><br />
                                    <td style="width:120px;"><br />
                                        <%#DataBinder.Eval(Container.DataItem, "Date")%><br />
                                    </td><br />
                                    <td style="width:350px;"><br />
                                    </td><br />
                                    <td style="width:60px;"><br />
                                        <asp:CheckBox ID="CheckBox1" runat="server" /> <br />
                                    </td><br />
                                </tr><br />
                        </ItemTemplate><br />
                        <FooterTemplate><br />
                            <tr><br />
                                    <td style="width:120px;"><br />
                                    </td><br />
                                    <td style="width:120px;"><br />
                                    <label id="Total" runat="server">£867.30</label><br />
                                    </td><br />
                                    <td style="width:120px;"><br />
                                    </td><br />
                                    <td style="width:350px;"><br />
                                    </td><br />
                                    <td><br />
                                        <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true" /><br />
                                    </td><br />
                                </tr><br />
                                <tr><br />
                                    <td colspan=4><br />
                                        <asp:Button ID="Button1" runat="server" Text="Save" /> <br />
                                        <asp:Button ID="Button2" runat="server" Text="PDF" CommandName="ShowPDF" /><br />
                                    </td><br />
                                </tr><br />
                            </table><br />
                        </FooterTemplate><br />
                    </asp:DataList><asp:XmlDataSource ID="XmlDataSource2" runat="server" DataFile="~/xml/Copy of Recommended.xml"<br />
                        XPath="Accounting/Dues/Due"></asp:XmlDataSource><br />
                </td><br />
            </tr><br />
        </table><br />
    </ItemTemplate><br />
    </asp:DataList>

You have to manipulate each control placed inside another List by using its ID.

for example:

You can reference the embedded Save Button instance and attach Click event by

Button saveButton=CType(DataList1.Items(0).FindControl("saveButton"),Button)
AddHandler saveButton.Click, AddressOf SaveButton_Click

Hi.

Last week I posted a question regarding reading Excel file and loading it into the DataGrid.
I didn't get any useful response back so please forgive me for posting this second time.
I'm sure someone had the same problem I have.

I have 3 columns in Excel. One of the columns (User Id) has text data (like: User 1) or a number data (like: 12345). My code works and doesn't throw any error but for some reason it only extracts text data. The numbers are missing and I'm not sure why. I've tried to foramt that columnt to TEXT only but it doesn't help. Just to be sure I looped through DataSet to make sure the values are there and of course they weren't.

Here's the code that reads Excel and loads data into DataGrid. Please help.

Thank you.

Try<br />
            'Create DataSet and DataAdapter<br />
            ds = New System.Data.DataSet<br />
            da = New System.Data.OleDb.OleDbDataAdapter<br />
<br />
            'Establish connection<br />
            con = New System.Data.OleDb.OleDbConnection( _<br />
             "provider=Microsoft.Jet.OLEDB.4.0; " & _<br />
             "data source=" & Session("ExcelFilePath").ToString() & "; " & _<br />
             "Extended Properties=Excel 8.0")<br />
<br />
            'Create command<br />
            cmdSelectExcel = New System.Data.OleDb.OleDbCommand("SELECT * FROM [Sheet1$] ORDER BY Company", con)<br />
<br />
            'Open connection<br />
            con.Open()<br />
<br />
            'Exectue command through adapter<br />
            da.SelectCommand = cmdSelectExcel<br />
            da.Fill(ds, "[Sheet1$]")<br />
<br />
            'Assign DataSourse of the DataGrid and bind it<br />
            dg.DataSource = ds.Tables(0).DefaultView<br />
            dg.DataBind()<br />
<br />
            'Close Connection<br />
            con.Close()<br />
        Catch ex As Exception<br />
            'Display error message<br />
            lblError.Text = "Error: " & ex.ToString()<br />
            lblError.Visible = True<br />
        End Try

Do you have the facility on Access to fire a SQL command at the database. You can do this in MSSQL 2005 and it will show you the results as they would appear.

Not sure what you mean. I'm trying to read Excel file using OleDb.

I am curently using MSSQL server 2005. An option to this is MS SQL Server Management Studio which allows you to fire SQL queries straight at the database and then shows you the returned results. I often use this feature to test SQL prior to placing it in the code. Is there a similar feature in Acess that would allows this. If there is, and you perform this and retrieve the details with the numbers requested then you can be sure the problem is with the Oledbadapter or something in your code. Rather than the SQL or access.

Hope this makes more sense.

Thank you. I know that the problem is with OldeDb. Like I've mentioned before it doesn't retreive values from Excel, they are just empty. In my research I found out that when you use OldeDb to extract data from Excel it uses first column's format, which is text in my example. I just thought there's a way around it.

Thank you again. If you hear anything let me know. And if I find something out I'll pst it here.

Alex.

OK. I figured it out with the help of a samrt man of course. Smile | :)

Here's the code and it will work. I hope that I can save some time to others if they need to do the same thing I do now.

Enjoy.

Try<br />
            'Create DataSet and DataAdapter<br />
            ds = New System.Data.DataSet<br />
            da = New System.Data.OleDb.OleDbDataAdapter<br />
<br />
           con = New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Session("ExcelFilePath").ToString() & ";Extended Properties=""Excel 8.0;HDR=Yes;IMEX=1;MaxScanRows=0""")<br />
<br />
            'Create command<br />
            cmdSelectExcel = New System.Data.OleDb.OleDbCommand("SELECT c.[Company], c.[Journal Entry], c.[Vendor] FROM [Sheet1$] AS c ORDER BY c.[Company]", con)<br />
<br />
            'Open connection<br />
            con.Open()<br />
<br />
            'Exectue command through adapter<br />
            da.SelectCommand = cmdSelectExcel<br />
            da.Fill(ds, "Company")<br />
<br />
            'Assign DataSourse of the DataGrid and bind it<br />
            dg.DataSource = ds.Tables(0).DefaultView<br />
            dg.DataBind()<br />
<br />
            'Close Connection<br />
            con.Close()<br />
        Catch ex As Exception<br />
            'Display error message<br />
            lblError.Text = "Error: " & ex.ToString()<br />
            lblError.Visible = True<br />
        End Try

I'm trying to find a definitive answer to this question:
How many users are allowed to view web reports on Crystal Reports 11 developer edition?

I keep getting different answers. Business Objects told me there was no limit however I keep reading online that there is in fact a limit.

I'm developing a website for our client that needs to generate PDF/excel reports for each of their sales reps(meaning each of their 1100 sales reps needs to have the ability to go onto the website and view their report).

The website will be located on one of our company servers but obviously, outside of our firewall.

Can I use crystal for this task of handling 1100 sales reps or is there a limit to the number of users who can use this? If not, can anyone recomend a better alternative?

Thanks.

-Goalie35

Hi May be this is not the appropriate place but still believe it will yield something. Pls guide me to a starting link for web promotion on search engine and marketing the web site for generating revenue.

Many thanks

Don't Quit

web promotion is very - very good and easy work for web site promotion if you want to gruid properly read on google search engine.Its make easy for you.

Pavan Pareta

Hi all,

can any one tell me the difference b/w DataGrid & Gridview webserver controls?
is there any site which explains me about .NET 2.0 server controls other than Microsoft.com?
Thanks,
Rahi Sharma

If you look at what you do not have in life, you don't have anything,
If you look at what you have in life, you have everything... "

The GridView replaces the DataGrid in ASP.Net 2.0. I'm guessing they changed the name because of the great deal or new funcionality built in to it since version 1.1. EG Sorting

I just had my most embarasing moment when I realised that I cant link to a website from an event handler.

Can you show me the code to transfer to(maybe codeproject.com) from an eventhandler using VB.net in an ASP.NET page

Soon to be famous black south african programmer

Response.Redirect("http://www.codeproject.com")

Hi there.......

I used validation controls in my aspx applicaion, in local machine it's working fine. If i uploaded in remote server, it is showing error..

If i use this,

means, in remote server validation controls are working fine, but button click event was not generated.........

Please help me.....

Thks n Advance

Sam.M

pls provide full path of our javascript file like

Keep Smiling !!! Tomorrow Never Die
Parwej Ahamad
g_parwez@rediffmail.com

Hi,

I am not able to take the setup of my web application.I have right clicked on the solution and added new project. selected the primary output,content files etc.

Every thing is getting compiled when I rebuild the solution but the content files are not getting added.
I could only see the bin directory.
Please help..

Regards,
Sivaprasad

Hi,

Can anyone suggest a free to use web service for a test bed application?

Something like a weather forecast service..

Any thought?

Kevin

how can i create a proxy of ma web service

bia