AJAX :: Catch With Javascript For Error Trapping In Vb Page?
Dec 18, 2010What is the trick to doing error trapping with javascript and Ajax controls in a VB.net page?
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CREATE PROCEDURE DeleteDepartment
(
@DepartmentID int
)
AS
BEGIN TRANSACTION
DELETE FROM Employees
WHERE DepartmentID = @DepartmentID
IF @@ERROR <> 0
BEGIN
ROLLBACK
RAISERROR ('Error', 16, 1)
RETURN
END
DELETE FROM Departments
WHERE DepartmentID = @DepartmentID
IF @@ERROR <> 0
BEGIN
ROLLBACK
RAISERROR ('Error', 16, 1)
RETURN
END
OMMIT
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[Code]....
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This all worked before when I had MessageBox - it showed, then the page redirected when I clicked Ok.
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MemoryStream.Seek(6 * StartOffset, 0)
_MemoryStream.Read(_Buffer, 0, 6)
Catch ex As IOException
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How To Email Error Message In Catch
Feb 14, 2011I have the code below which I now need to figure out how to not only display but also email it all to my email, this way should any user encounter a error we get to see exactly what is it.
Catch ex As Exception,lblInformation.Text = ("<h4>Unable to save data in database</h4>" + vbNewLine + "The error was '" + ex.Message + "'" + vbNewLine + vbNewLine + "The SQL Command which falied was:" + vbNewLine + "<strong>" + mySQL + "</strong>" + vbNewLine + "Please contact the Service Desk to report this error.").Replace(vbNewLine, "<br />" + vbNewLine) [code]...
in a new line above "booInsertedRecord = False" and then creating a new "Dim objEMail New MailMessage()" but then realised that won't work because it's msg is defined in the catch so not to sure what steps next to take.It's been a while since I used VB and I didn't need to use anything like this
Edit - @tzup ToString() shows
[The error was 'System.Data.SqlClient.SqlException: The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value.The statement has been terminated.at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
C# - Error String In Catch Block?
Jul 22, 2010i have the following code which show error from a string when there is a error
is there any way that i can make this in catch block?
main()
{
try
{
if (a==1)[code].....
Like below:i have the following code which show error from a string when there is a error
is there any way that i can make this in catch block?
main()
{
try[code]....
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Protected Function GetConnection() As SqlConnection
Dim ret_conn As SqlConnection
ret_conn = New SqlConnection(System.Web.Configuration.WebConfigurationManager.ConnectionStrings("EUCNET00617").ToString())
ret_conn.Open()
GetConnection = ret_conn
End Function
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WebRequest request = WebRequest.Create(url);
request.Timeout = 10000;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response == null || response.StatusCode != HttpStatusCode.OK)
{
// SERVER IS OK
return false;
}
else
{
// SERVER HAS SOME PROBLEMS
return true;
}
I found out this morning however that this doesn't work. An ASP.Net application crashed showing a Yellow Screen Of Death and my application didn't seem to mind because the response.StatusCode equaled HttpStatusCode.OK. What am I missing?
HttpWebResponse response;
try
{
response = (HttpWebResponse)request.GetResponse();
}
catch (WebException webexp)
{
response = (HttpWebResponse)webexp.Response;
}
Elmah - Catch An Error But Still Log It And Send Email?
Feb 24, 2011First I found that you can catch it and log it inside a catch, but this doesn't send an email.
Then I found out about using the Error Signal class. That worked, however what wasn't apparent from reading, is that it treats the error like normal, so when I signal the error it goes to the custom error page still, I don't want that to happen. What I want to do is catch that error, log it, send the email, but stay on the page the error happened so I can provide special feedback. I do not want it go to the custom error page.
EDIT: This is what I have and it redirects me to the custom error page.
Try
smtpClient.Send(mailMessage)
Catch smtpEx As SmtpException
errorSignal.FromCurrentContext().Raise(smtpEx)
Catch ex As Exception
errorSignal.FromCurrentContext().Raise(ex)
End Try
Edit: Posting my web.config sections that involve Elmah (besides the connection string hah)
And there is nothing in my Global.asax file involving Elmah.
<configSections>
<sectionGroup name="elmah">
<section name="security" requirePermission="false" type="Elmah.SecuritySectionHandler, Elmah" />
<section name="errorLog" requirePermission="false" type="Elmah.ErrorLogSectionHandler, Elmah" />
<section name="errorMail" requirePermission="false" type="Elmah.ErrorMailSectionHandler, Elmah" />
<section name="errorFilter" requirePermission="false" type="Elmah.ErrorFilterSectionHandler, Elmah" />
</sectionGroup>
</configSections>
<elmah>
<security allowRemoteAccess="1" />
<errorLog type="Elmah.SqlErrorLog, Elmah" connectionStringName="Elmah.Sql" applicationName="Web Main" />
<errorMail from="xxx" to="xxx" cc="xxx" subject="main website error" async="true" smtpPort="25" smtpServer="xxx" userName="xxx" password="xxx" />
<errorFilter>
<test>
<and>
<equal binding="HttpStatusCode" value="404" type="Int32" />
<regex binding="FilterSourceType.Name" pattern="mail" />
</and>
</test>
</errorFilter>
</elmah>
<httpHandlers>
<add verb="POST,GET,HEAD" path="errors/admin/elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
</httpHandlers>
<httpModules>
<add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" />
<add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" />
<add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" />
</httpModules>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true">
<add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" preCondition="managedHandler" />
<add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" preCondition="managedHandler" />
<add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" preCondition="managedHandler" />
</modules>
<handlers>
<add name="Elmah" path="elmah/admin/elmah.axd" verb="POST,GET,HEAD" type="Elmah.ErrorLogPageFactory, Elmah" preCondition="integratedMode" />
</handlers>
<httpErrors>
<remove statusCode="404" subStatusCode="-1" />
<remove statusCode="500" subStatusCode="-1" />
<error statusCode="500" prefixLanguageFilePath="" path="/errors/error.asp" responseMode="ExecuteURL" />
<error statusCode="404" prefixLanguageFilePath="" path="/global/404.aspx" responseMode="ExecuteURL" />
</httpErrors>
</system.webServer>
<location path="errors/admin/elmah.axd">
<system.web>
<authorization>
<deny users="?" />
</authorization>
</system.web>
</location>
Web Forms :: File Not Found Error - Try / Catch?
Sep 7, 2010I come from a VB environment. I'm looking at 2 different file extensions. If one doesn't exist look at the next. I was hoping to use the try/catch function. I can get it to find the first extension but not the second. Here is my the try/catch part of code:
try
{
string website = xAll;
Response.Redirect(website);
}
catch (FileNotFoundException)
{
string website1 = xAll1;
Response.Redirect(website1);
}
The error dialog that pops up shows Connection Error in the title and a yellow exclamation point with File Not Found! I thought the FileNotFoundException would work(?).
Event Causing Error But Can't Catch Exception
Apr 22, 2010A developer has created a custom control in ASP.NET using VB.NET. The custom control uses a repeater. In certain scenarios, the rpt_ItemDataBound event is encountering a data error. My goal is rather than having the user see the yellow screen of death, give the user a friendlier error explaining exactly what the data error is. I figured I would be able to use a Try/Catch block as shown below throw the exception, however, it appears that the event has nowhere to be thrown to and stops executing at the "End Try" line.
Protected Sub rpt_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rpt1.ItemDataBound, rpt2.ItemDataBound
Try
ProcessBadData...
Catch ex As Exception
Throw ex
End Try
End Sub
In VB.NET, I can find where the repeater's DataSource is being set, however, I can not find a DataBind event. how I can capture the exception in this ASCX control so I can report it to the user? Edit: The stack trace looks like this. There is another repeater within the repeater that is actually causing the error (rptOther) and I'm able to catch the error, but I can only throw it to the rpt_ItemDataBound. I can't figure out how rpt_ItemDataBound is getting called without a DataBind event.
at Company.WebForms.Control.rptOther_ItemDataBound(Object sender, RepeaterItemEventArgs e)
at System.Web.UI.WebControls.Repeater.OnItemDataBound(RepeaterItemEventArgs e)
at System.Web.UI.WebControls.Repeater.CreateItem(Int32 itemIndex, ListItemType itemType, Boolean dataBind, Object dataItem)
at System.Web.UI.WebControls.Repeater.CreateControlHierarchy(Boolean useDataSource)
at System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e)
at System.Web.UI.WebControls.Repeater.DataBind()
at Company.WebForms.Control.rpt_ItemDataBound(Object sender, RepeaterItemEventArgs e)
Web Forms :: Get Value Of Error In Try Catch And Pass To Label?
Mar 2, 2011What I am trying to do is capture the error from a try catch and pass to a label that is hidden on my masterpage, which is part of the page I am working on. I am injecting an error purposly but nothing is happening, I get no error that pops up and even if I write text to the label nothing pops up at all.
[Code]....
Geting Error When Accessing RadioButtonList From Javascript That Exist In A Page That Have Master Page?
Mar 13, 2010i have a asp.net page that have its master page and it contain RadioButtonList1 and i try to do thefollwing
<script type="text/javascript">
var radioButtonList = document.getElementById('<%=RadioButtonList1.ClientID%>');
if(radioButtonList[0].checked)
document.getElementById("_secondTR").style.display = "block";
else if (radioButtonList[1].checked )
document.getElementById("_secondTR").style.display = "none";
}
</script>
<table style="width: 100%">
<tr id="Tr1">
<td>
<asp:RadioButtonList ID="RadioButtonList1" runat="server" BackColor="#FFCC99"
RepeatDirection="Horizontal" Width="117px" onclick="ShowHide()">
<asp:ListItem Value="1">Yes</asp:ListItem>
<asp:ListItem Value="0">No</asp:ListItem>
</asp:RadioButtonList>
</td>
</tr>
<tr id="_secondTR" runat="server" style="display: none">
<td>
<asp:RadioButton ID="Five" runat="server" GroupName="1" BackColor="#669999" />
<asp:RadioButton ID="Four" runat="server" GroupName="1" CausesValidation="True" BackColor="#669999" />
</td>
</tr>
</table>
i can't get RadioButtonList1 from java script ...
Preferred Method To Catch Specific OleDB Error?
Jan 4, 2010- I have a situation in which I must execute a dynamically built stored procedure against tables that may, or may not be in the database. The data retrieved is then shunted to a VB.Net backed ASP based report page. By design, if the tables are not present in the database, the relevant data is automatically hidden on the report page. Currently, I'm doing this by checking for the inevitable error, and hiding the div in the catch block. A bit kludgy, but it worked. I can't include the VB code-behind, but the relevant stored procedure is included below.
However, a problem with this method was recently brought to my attention when, for no apparent reason, the div was being hidden even though the proper data was available. As it turned out, the user trying to select the table in the dynamic SQL call didn't have the proper select permissions, an easy enough fix once I could track it down. So, two fold question. First and foremost - is there a better way to check for a missing table than through catching the error in the VB.Net codebehind? All things considered, I'd rather save the error checking for an actual error. Secondly, is there a preferred method to squirrel out a particular OLE DB error out of the general object caught by the try->catch block other than just checking the actual stack trace string?
SQL Query - The main gist of the code is that, due to the design of the database, I have to determine the name of the actual table being targeted manually. The database records jobs in a single table, but each job also gets its own table for processing data on the items processed in that job, and it's data from those tables I have to retrieve. Absolutely nothing I can do about this setup, unfortunately.
DECLARE @sql NVarChar(Max),
@params NVarChar(Max),
@where NVarChar(Max)
-- Retained for live testing of stored procedure.
-- DECLARE @Table NvarChar(255) SET @Table = N'tblMSGExportMessage_10000'
-- DECLARE @AcctID Integer SET @AcctID = 10000
-- DECLARE @Type Integer SET @Type = 0 -- 0 = Errors only, 1 = All Messages
-- DECLARE @Count Integer
-- Sets our parameters for our two dynamic SQL calls.
SELECT @params = N'@MsgExportAccount INT, @cnt INT OUTPUT'
-- Sets our where clause dependent upon whether we want all results or just errors............................