Submit and Postbackhttp://www.asp.netWed, 30 Jun 2010 22:06:28 GMTumbracoComments for Submit and PostbackenComment Posted by abinashbishoyihttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackTue, 21 Apr 2009 01:49:19 GMT00000000-0000-0000-000000004190I always wait for you, Joe. Thanks.

]]>Comment Posted by rogerric9http://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackTue, 21 Apr 2009 14:04:40 GMT00000000-0000-0000-000000004191Thanks, Joe. Very informative.

]]>Comment Posted by abelanethttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackTue, 21 Apr 2009 21:18:58 GMT00000000-0000-0000-000000004192Cool thanks

]]>Comment Posted by Sayrehttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackWed, 22 Apr 2009 02:31:12 GMT00000000-0000-0000-000000004193Nice Video Joe.

Thanks

]]>Comment Posted by Manoj1906http://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackFri, 24 Apr 2009 19:51:48 GMT00000000-0000-0000-000000004195Educative

]]>Comment Posted by JoeStagnerhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackMon, 27 Apr 2009 14:35:58 GMT00000000-0000-0000-000000004196:) Thanks Guys !!!!

]]>Comment Posted by amroshhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackMon, 18 May 2009 08:54:59 GMT00000000-0000-0000-000000004197nice Work..

]]>Comment Posted by amroshhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackMon, 18 May 2009 08:55:26 GMT00000000-0000-0000-000000004198Nice work Man

]]>Comment Posted by TomNuffhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackTue, 19 May 2009 21:10:38 GMT00000000-0000-0000-000000004199I had a question. In Visual Studio 2008 i have created an asp website. I'm creating a drop down list and want to submit the value of the drop down list back to an SQL DB. I created a simple form that has one button and one drop down list as a test go ensure I can write.

I've been having the hardest time posting back to the server. I keep getting an error after I hit the button that says

"InvalidCastException was unhandled by user code"

Unable to Cast object of type

'System.Web.UI.WebControls.SqlDataSourceCommandEventArgs' to type

'System.Web.UI.WebControls.SqlDataSourceSelectingEventArgs'.

This is the code for my .aspx.vb

---------------------------------

Partial Class _Default

Inherits System.Web.UI.Page

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click

formresults.Insert()

End Sub

Protected Sub SqlDataSource1_Inserting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceSelectingEventArgs) Handles formresults.Inserting

e.Command.Parameters("@ContactType").Value = ContactType.Text

End Sub

End Class

----------------------

This is the code for my .aspx page

------------------------------

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "www.w3.org/

<html xmlns="www.w3.org/

<head runat="server">

<title>Untitled Page</title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:DropDownList ID="ContactType" runat="server" AutoPostBack="True">

<asp:ListItem>Choose Contact Type</asp:ListItem>

<asp:ListItem>Email</asp:ListItem>

<asp:ListItem>Phone</asp:ListItem>

<asp:ListItem>Fax</asp:ListItem>

<asp:ListItem>In Person</asp:ListItem>

<asp:ListItem>Social Meeting</asp:ListItem>

<asp:ListItem>Other</asp:ListItem>

</asp:DropDownList>

</div>

<asp:SqlDataSource ID="formresults" runat="server"

ConnectionString="<%$ ConnectionStrings:SSAContactLogConnectionString %>"

InsertCommand="StoredProcedure4"

InsertCommandType="StoredProcedure"

SelectCommand="SELECT * FROM [TestTable]">

</asp:SqlDataSource>

<asp:Button ID="Button1" runat="server" Text="Submit" />

</form>

</body>

</html>

Any help would be appreciated.

Thanks,

]]>Comment Posted by dave14febhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackWed, 01 Jul 2009 06:43:40 GMT00000000-0000-0000-000000004200Where I can find more videos from you, Joe?

]]>Comment Posted by 2177http://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackThu, 16 Jul 2009 23:08:29 GMT00000000-0000-0000-0000000042012 years ago, i was novice to asp.net. thanks to joe, now i am asp.net developer !

]]>Comment Posted by velpurihttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackFri, 17 Jul 2009 09:09:56 GMT00000000-0000-0000-000000004202Really nice work joe

Many Thanks,

]]>Comment Posted by hakkibilgehanhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackTue, 18 Aug 2009 23:26:47 GMT00000000-0000-0000-000000004203joe's super man

]]>Comment Posted by jpete17http://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackThu, 01 Oct 2009 13:40:19 GMT00000000-0000-0000-000000004204great videos for touching up any misunderstandings

]]>Comment Posted by anirudha guptahttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackThu, 05 Nov 2009 11:29:34 GMT00000000-0000-0000-000000004205i try to download it but i can't do it . this is not bandwidth or broadband problem. i already have a good connection how i can download this video because i see in browser then i waste our time so i need it's hard copy for watch it

]]>Comment Posted by tmortonhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackThu, 05 Nov 2009 19:58:27 GMT00000000-0000-0000-000000004206@anirudha gupta: Click on the Download Video link above to download the video in ZIP format (download.microsoft.com/ I just tried it, and it worked successfully. If it's not working from you, there is an issue between your computer and the server...perhaps a corporate policy or something else.

]]>Comment Posted by talal rajihhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackTue, 17 Nov 2009 07:42:20 GMT00000000-0000-0000-000000004207thank's for this one

]]>Comment Posted by joe czhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackWed, 25 Nov 2009 01:36:49 GMT00000000-0000-0000-000000004208Thanks Joe... Very informative..

]]>Comment Posted by arkashttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackFri, 27 Nov 2009 18:48:44 GMT00000000-0000-0000-000000004209Hi Joe!

awsoem video this one here.

Now i understand the definition of postback.

But i also have i question. I would like to know how do i do t post back to the user all informaiton he introduced just in case there is something wrong

i created a webforn where each user can insert things like name, email, some text and/or some data and later they can verify that by click on a button and that information show in other page.

thanks

Francisco ur student

]]>Comment Posted by phenixitahttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackMon, 07 Dec 2009 14:05:19 GMT00000000-0000-0000-000000004210Very clear and simple explanation. Bravo! :-)

]]>Comment Posted by shbnq422http://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackThu, 31 Dec 2009 10:27:29 GMT00000000-0000-0000-000000004211thanks

]]>Comment Posted by tacitushttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackSat, 30 Jan 2010 15:07:14 GMT00000000-0000-0000-000000004212This is great, I am learnign this way faster then I learned C# using books!

]]>Comment Posted by josephwhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackSat, 13 Mar 2010 06:09:03 GMT00000000-0000-0000-000000004213Moving right along. Thank you for clarifying alternate methods for implementing postback.

]]>Comment Posted by bozaluhttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackSun, 20 Jun 2010 11:29:03 GMT00000000-0000-0000-000000009152well it was all going good until you put in the jspostback and i could not find that to add to my solution Explorer.to continue working with the wed script

]]>Comment Posted by Blueberrychinahttp://www.asp.net/web-forms/videos/building-35-applications/submit-and-postbackWed, 30 Jun 2010 22:06:28 GMT00000000-0000-0000-000000009271thanks

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