DetailsView loses controls state and binding after an exception occurs - ASP.NET Discussion Boards

Where I have to use this Search method and how I have to use this search method.Since Iam new to this please explain me

Priya

If you are writing a javascipt for validation you can use search method.
as if variale xyz contain the text to be validates then use
xyz.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/)

However if you are using vaildation control then just copy the regular expression in search method which suits your requirement and set it in validation control.

Shujaat

As the subject reveals, I'm trying to access an ImageField programmatically in order to set the image according to the business object.

In the RowDataBound event handler, I have:

<br />
protected void MessagesGridView_RowDataBound(object sender, GridViewRowEventArgs e)<br />
{      <br />
   if (e.Row.RowType == DataControlRowType.DataRow)<br />
   {<br />
      ImageField theImage = (ImageField)e.Row.Cells[0].Controls[0];<br />

But I get a "[...] Cannot convert type 'System.Web.UI.Control' to 'System.Web.UI.WebControls.ImageField' [...]"

I've searched like mad, but I can't see what I'm doing wrong.

"When you have made evil the means of survival, do not expect men to remain good. Do not expect them to stay moral and lose their lives for the purpose of becoming the fodder of the immoral. Do not expect them to produce, when production is punished and looting rewarded. Do not ask, `Who is destroying the world?' You are."

-Atlas Shrugged, Ayn Rand

Please try this........

ImageField theImage = (ImageField)e.Row.Cells[0].FindControl("imageFieldID");

Parwej Ahamad
g.parwez@gmail.com

Thanks for your suggestions; unfortunately it gives the same compiler error.

I "solved" the issue by simply adding an Image control to the ImageField's cell's control collection. Not very clean, but it works.

"When you have made evil the means of survival, do not expect men to remain good. Do not expect them to stay moral and lose their lives for the purpose of becoming the fodder of the immoral. Do not expect them to produce, when production is punished and looting rewarded. Do not ask, `Who is destroying the world?' You are."

-Atlas Shrugged, Ayn Rand

g'day folks,

i'm having a small issue with regards to custom event handlers in my web service. I'm trying to create a custom event handler whose purpose is to display messages on the web form as a particular method is executed via the web service. For instance, lets assume that the web method generates a report from a database then my eventhandler would update on the web form indicating which aspects of the report has been generated.

Initially I thought let's do it the standard way as you would in a standard console application as follows:
public delegate void ReportGenerationProgressEventHandler(string x);
public event ReportGenerationProgressEventHandler myReportGenerationHandler;

The above can be instantiated as follows:
myReportGenerationHandler+= new ReportGenerationProgressEventHandler (Service_myReportGenerationHandler);

In my webservice if I just declare the delegate and event types as above. Then instantiate an object of my webservice in the webform I do not get an option to create my report progress eventhandler via intellisense.

I have tried google but most disscusions tends to be focused on custom events for custom controls unless I go write a custom control which I think will not be appropriate in my case at all.

Is there an alternative method of achieving the same result in asp.net ?

thanks

edit: mistake in code

Just to answer my own question and for anyone else's benefit.

Well it seems that web services in .net doesnt support eventing even though there is a specification,[^] , from the W3C committee that web services should support eventing. The only other option will be to use WCF however platform compatability will be an issue.

Hi.

I'm using ASP.NET 2.0 and MS SQL Server 2005 environment. I'm developing an aspx page which is using DetailsView to insert data.
There are several TemplateFields are located at the DetailsView control. These Template fields containing TextBox and DropDownlList controls and I'm passing values of these controls using %Bind% syntax:

<asp:DetailsView ID="dvCity" runat="server" AutoGenerateRows="False" DataKeyNames="Id"
DataSourceID="sdsCity" DefaultMode="Insert" OnItemInserted="dvCity_ItemInserted">
<Fields>
<asp:BoundField DataField="Id" HeaderText="Id" InsertVisible="False" ReadOnly="True"
SortExpression="Id" Visible="False" />
<asp:TemplateField HeaderText="Name">
<InsertItemTemplate>
<asp:TextBox ID="txbName" runat="server" Text='<%# Bind("Name") %>'></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvName" runat="server" ControlToValidate="txbName" SetFocusOnError="true"
Display="Dynamic" ErrorMessage="You must specify a non-blank value for Name.">*</asp:RequiredFieldValidator>
</InsertItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="RegionId" HeaderText="RegionId" SortExpression="RegionId"
Visible="False" />
<asp:TemplateField HeaderText="Region">
<InsertItemTemplate>
<asp:DropDownList ID="ddlRegion" runat="server" DataSourceID="sdsRegion" DataTextField="Name"
DataValueField="Id" SelectedValue='<%# Bind("RegionId") %>'>
</asp:DropDownList>
</InsertItemTemplate>
</asp:TemplateField>
</Fields>
</asp:DetailsView>

DataSource for the DetailsView is the SqlDataSource which is using StoredProcedures to insert data into Database.

Some parts of business logic are located in the T-SQL code of the StoredProcedure and in case of any error I'm throwing exception from T-SQL using RAISE_ERROR method.

In the aspx.cs, OnItemInserted event of the DetailsView I've implemented following code for exception processing:

protected void dvCity_ItemInserted(object sender, DetailsViewInsertedEventArgs e)
{
if (e.Exception != null)
throw e.Exception;
else
Response.Redirect("City.aspx");
}

When there is no error during StoredProcedure execution everything is works fine.
When my StoredProcedure raises any exception and this exception was handled by my handler user sees the AJAX popup and clicks OK.

Then popup closes, user edits values in DetailsView controls, clicks Save again BUT I got another exception saying that ((TextBox)dvCity.FindControl("txtName")) is NULL. The same is for DropDownList.

It seems to me that DetailsView loses databinding after an exception occurs during Insert/Update operation.
<b>Does anyone can help me how to handle or re-throw exception without DetailsView unbind?</b>

http://www.jetideas.com

Hi,
i would like to trace my code using breakpoints,
but its not working,while running appln,
even i checked properties in "debug" tab-all breakpoints enabled,
also tried with <trace="true">Please suggest me...

Thanks&Regards,
Priya.

I think you are running your project in release mode. Make as debug mode. See in toolbar you have found it.

Parwej Ahamad
g.parwez@gmail.com

changed to debug mode, not tracing.

Thanks&Regards,
Priya.

Build one more time and check the mode in which your application is running

Thanks and Regards
Sandeep

If 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... "

tried all sorts of mode, of no use.

Thanks&Regards,
Priya.

are you debuging the rig OMG | :OMG:

ht application ?

Thanks and Regards
Sandeep

If 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... "

This sometimes happens in case of more than one worker process check the number of worker process running in task Manager

Shujaat

i hv checked it, only one process running, but still not tracing

Thanks&Regards,
Priya.

In visual studio go to Build --> Configuration Manager This will open the Configuration Manager Window

In the Active solution Configuration dropdown Select debug

Now check in the project column that the configuration selected for your project is debug and not release or any other. If it is any other change it to debug.

Shujaat

Hi there,

Anyone gone through deployment process in ASP 2.0. Please educate me on this - I want my site updatable (I know how to do that) but compile and deploy process always complies all the files - now how do I know what all dll and source code has been changed on my last build. This is more related to tracking changes in VSS or any config mgmnt s/w - I just want to update one aspx and get one dll for it (I have congigured build-deployment as one dll for each as*x), I couldn't find any info on this aspect, please let me know how to achieve the goal. Even if I have one dll as output for the website with updatable aspx/ascx (using web deployment project) it gives me all the aspx complied with latest datetime stamp, so if I don't keep track of what all files I modified - I have to deploy entire website again. Instead it should be something like I changed 5 aspx, got them complied, and deployed the modified aspx plus new dll - I don't find a proper way...please guide.

Pankaj No.1

I need to access a textbox in a insertItemTemplate in a formView control to increment a primary key.
thanks for ur help.

BiG RaLpH

i didnt get u but i think this what u want....

TextBox txtBox=(TextBox)GridView1.Rows[Index].Cell[Index2].FindControle("TemplateFieldName");

Thx ahmad
But I really know how to do that I want it in the formview control not in the grid view control.

Thx anyway for ur answer.

BiG RaLpH

Hi,

Currently i'm developing a web based app. In one of the page i need to generate and show some data in excel.

I have added Excel 11.0 as a reference and using the following declarations:

Excel.Application ExcelApp = null;
Excel.Workbook ExcelWorkbook = null;
Excel.Worksheet ExcelWorkSheet = null;

and i'm using it as below

ExcelApp = new Excel.Application();
ExcelWorkbook = (Excel.Workbook)(ExcelApp.Workbooks.Add(Type.Missing));
ExcelWorkSheet = (Excel.Worksheet)ExcelWorkbook.Sheets["Sheet1"];
and it works fine.

But when i use the code below i'm getting compile time errors and for the below im not referring to Excel 11.0 library.

using Microsoft.Office.Tools;
using Microsoft.Office.Tools.Excel;
using Microsoft.Office.Interop.Excel;

The above three lines are written at the namespace declaration section.

Application ExcelApp = null;
_Workbook ExcelWorkbook = null;
_Worksheet ExcelWorkSheet = null;

ExcelApp = new Application();
ExcelWorkbook = (_Workbook)(ExcelApp.Workbooks.Add(Type.Missing));
ExcelWorkSheet = (_Worksheet)ExcelWorkbook.Sheets["Sheet1"];

One more problem is now the above codes fail to compile in machines in which their counter compile. Can any one help me on this.

Thanx,

PLS

Application is a property which refers to the application of page one cannot make an object of it.

Can you plz tell me what reference are you using for these name spaces I mean which library are you using?

using Microsoft.Office.Tools;
using Microsoft.Office.Tools.Excel;
using Microsoft.Office.Interop.Excel;

Shujaat

When I add new item to ASP.Net 2.0 project Iam having Javascript file but not VB Script File where I will get this or how this can written in Notepad

Priya

Javascript file has .js extension.You can use vbscript file with .vbs extension.

in source file you can use vbscript file

write this script between Head tag

<script language="vbscript">
Sub Get()
MsgBox("this is vbscript")
End Sub
</script>

call vbscript

<body onload="Get()">
........................

You can also write vbscipt file in notepad in VB language and save it with .vbs extension

Best Regard

Pathan

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