I am new to .NET 3.5, found a situatation where I need to to do object initialization only if certain condition fullfills this is easy if we do using previous way but when i try to do this is .NET 3.5 new feature of Object Initializer way I get syntatic errors
Earlier way .NET 2.0 (I want to initialize object only when string is not empty)
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I want to store Values in two table in database..
For Ex.
table 1-- Resi
if Resi is clicked then the values are stored in resi_db and then it will also get store in the HEG01_db table in database..
table 2-- NonResi
if NonResi is clicked then the values are stored in NonResi_db and then it will also get store in the HEG01_db table in database..
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I am getting error of in Foreach loop
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How to resolve this situation or any other alternative to cum out of this problem.
I have a problem similar to the one found in this Question I have a ListView nested inside of another listview. The outer Listview is bound to an object in the codebehind.
listViewOuter.DataSource = myObject[0].someProperty;
listViewOuter.DataBind();
Where someProperty is a List of another object(mySecondObject). The inner Listview needs to be editable and it is bound in the markup to another property(secondObjectProperty) of type List in the mySecondObject as such:
DataSource='<%# Eval("secondObjectProperty")%>'
This works fine to display the data, however I cannot figure out how to put the nested listview into edit mode. I am handling the OnItemEditing command and setting the EditIndex to the proper row however the mode of the nested LV never changes. I have tried every imaginable combination of updates panels and rebinding both the inner and outer listviews however nothing seems to work
heres the LV markup(psuedocode)
<updatePanel>
<asp:ListView ID="outerListView" runat="server">
<layouttemplate here>
<itemTemplate>
<aspListView ID="innerListView" DataSource="<%# Eval("secondObjectPropery")% onitemEditng="editMethod">
</asp:LsitView>
</itemTEmplate>
</asp:ListView>
</updatePanel
I have the following object:
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In my edit View, I have the following:
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Lastly, my validation in my controller looks like this:
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The validation works for both First and Last in that the Validation Message is properly displayed for the appropriate error. However, the input-validation-error class is not being set on the textbox.
How do I ensure that the input-validation-error class gets set on the textbox when the textbox is tied to a field in a nested class of the Model?
If I have a list of contacts List<Contact> and a Contact object has an Office object property, I want to display a grid with columns
Contact Id, First Name, Last Name, Office Name
Where the sources of the above columns are respectively:
Contact.ContactId, Contact.FirstName, Contact.LastName, Contact.Office.OfficeName
I'm fine with binding the first 3, but was wondering whether I can bind the OfficeName using either Bind or Eval or whether I need to hook into the events and set the value there.
I have a gridview with a nested placeholder in each rows. I nested some checkboxes in each placeholders in each rows dynamically, so their ServerIDs are not the same (I dont want to use nested gridview). at the end in a button event I want to count checked checkboxes in gridview while I can not use findcontrol() method in each rows to find checkboxes due to their different ServerIDs.
View 3 RepliesHow can I remove the inherited properties?
View 2 RepliesI need to know the best way to do the following. I have nested business level APIs (say level 1 & level 2). L1 needs to call L2. Both APIs use the database layer directly at their own nesting levels.
Now, in the database layer, I fetch the db connection from the pool each time as follows:
SqlConnection conn = new SqlConnection(connString);
conn.Open();
Is it proper to fetch the db connection each time on every DB level call as above? I know it will return a connection from the ASP.NET connection pool. However, wouldn't it be better to maintain the same DB connection throughout the nested calls (or throughout the current http request lifetime)? Will fetching a connection from the pool each time cause issues with nested TransactionScopes?
Is there a better, cleaner way to do this in ASP.NET 2.0?
An ASP.NET 2.0 page displays a datalist of records. Each record can have many dates, so the dates are in a nested gridview (I chose a gridview over a datalist here because we want to be able to delete a date and this is easier done in a gridview). The parent record can never be deleted.
The display works fine: the nested gridview gets its datasource during the parent datalist's OnItemDataBound event.
The problem: the nested gridview's delete function. The date gets deleted without a problem (handled in the OnRowDeleting event), but somehow the redisplay is untying all the other nested gridviews from their datasources. The delete does not appear to cause a page postback, so I don't know how the other nested gridviews are losing their datasources.
Nested GridView Control returns "Object variable or With block variable not set" when outer GridView returns rows.
The Nested GridView Control works as long as the outer GridView returns rows, the following code works: [Code]....
Object variable or With block variable not set.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object variable or With block variable not set.
Source Error:
Line 118: If e.Row.RowType = DataControlRowType.DataRow Then
Line 119: Dim myStatus_ID As SqlDataSource = CType(e.Row.FindControl("sqlDeviceStatusAssign"), SqlDataSource)
Line 120: If Not e.Row.DataItem("Status_ID") Is Nothing Then
Line 121: myStatus_ID.SelectParameters(0).DefaultValue = e.Row.DataItem("Status_ID")
Line 122: End If
I have tried checking for IsDbNull and checking to see if a label exists in a given row. This code *If Not e.Row.DataItem("Status_ID") Is Nothing Then* appears to do nothing.Same with the following:
*Dim localLblItemReference As Label = CType(e.Row.FindControl("lblItemReference"), Label)
*If Not localLblItemReference Is Nothing Then
******************************************************************************************
To further clarify my question above, I am looking for a method to detect e.Row.DataItem("Status_ID") is nothing/null due to the outer GridView returning 0 results in a query.I have a (Outer) GridView Control with another GridView Control inside of a template field with it's associated SqlDataSource control.
In the "Protected Sub GridViewReport_RowCreated", I provide the Select Parameter for the associated SqlDataSource with the DataItem row value.When the (Outer) GridView Control does not return any rows, the "e.Row.DataItem("Status_ID")" throws a:
Exception Details: System.NullReferenceException: Object variable or With block variable not set.
I'm trying to create a nested gridview, but I'm stuck at the editing/deleting part of the nested gridview. (Below is my code).The nested gridviews are filling out nice, I've set the DeleteParameter in the SQLDataSource, but I'm still getting this error when trying to delete a criteria: 'The Gridview 'gvCriteria' fired event RowDeleting which wasn't handled.'I've tried to create a method 'gvCriteria_RowDeleting', but that didn't seem to work out.Someone who can give me a piece of advice? Would it be possible to fill the gridview without using gvDomain_rowDataBound? Dries
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And the C# behind:
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Objective:
Have the MultiView1 display only if Frieght values exceed 15.50. If check box is checked, retreive the row values of the Gridview1 and Gridview2 to perform a task.There will be two check boxes. One will be conditionally hidden. Each check box has a different function.
Example: Send an email notifying this entry has been flagged. I am using Visual Studio 2005 with ASP.NET 2 due to availability of resource. I have checked out numerous sites without finding the specific answer.
For example:
[URL]
The following a simplified representative example of what I am trying to accoumplish. It uses the Northwind.mdb access database with just the Customers and Orders table.
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In Nested Grid, we get a '+' sign. The problem is that '+' sign appears all times, even if there are no child records for that row. 1. Can we enable/disable OR Hide/Unhide '+' sign. depending on if child rows exits.2. OR alteast we can put some bgcolor indicating to user that this record do have child rows. Without any indicator user may feel quite annoying to click on '+' sign and nothing happens.
View 1 RepliesI have designed a collapsible nested gridview project using this article as a reference Collapsible Nested GridView with Paging using ASP.Net. I am trying to modify the code to collapse a gridview when another gridview is expanded so that only one nested gridview will be open at a time.
View 1 RepliesDo I have to use the 'Try Catch' condition or possibly find ways to catch the error myself? Do you use the Try Catch all the time, when, why not?
View 7 RepliesI have a event ServerStateReceived here checking condition of 4 servers whether they are UP or Down is going on.Here if flag ReadySent = true and 4 servers DOWN(Both are rare condition in a typical scenario) there will be a logic so that cotrol will go to the calling function only after all servers became UP here is bit of code
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i have function
public Menu Details(int? id)
{
return _dataContext.Menu.Include("ChildMenu").FirstOrDefault(m => m.MenuId == id);
}
now i need to add condition to child list ChildMenu something like fieldname=id. how can i do it?
I have Start date and accordingly find out end date
eg.if startdate=1/1/2010 then enddate=1/2/2010 for this use
enddate=startdate.AddMonths(1)
NOw if startdate = 28/2/2010 the output shuold be 31/3/2010.how to do this?
Here enddate=startdate.AddMonths(1) gives o/p=28/3/2010 but i want o/p shuold 31/3/2010.
I want to show the confirm button extender but only at some condition after clicking the button. Is there any way to do this without using javascript ?
View 4 RepliesI want to check a condition in a grid view e.g.
if(loginid.equels('admin'))
query = select * from memberlist;
else
query = select * from memberlist where memberid like 'operator%';
depending on the query ther grid view will display the listof members and also where to put this code in .cs or .aspx and how?
Im working on an source code with an sql query in a VAR type like var query = select ... from ... where ... ; is it possible to add an dynamic "where clause" like string condition = "where x.x > x.y"; e.g. var query = select ... from ... + condition;
View 2 Replies[Code]....
How to use the ValidationSummary if the condition is not met, or the table is empty?
I have a multiview in the page.
View1 has a button and a Grid. VIew2 has a Formview to add assignment. The property of the button is:
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If user click the button, it goes to the formview(adding interface).
I want to make the Add Assignment button invisible when there is a value in the grid so that the user can not enter more than one assignment.
I have a tricky scenario whereby I want to add ScriptManager scriptreference only on some conditions as follows
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I googled up and tried to add '#' as <%# but by adding '#' it can't find the class (xyzclass) and so get the error as
Expected class, delegate, enum, interface, or struct
I tried doing the work as mentioned here too[URL]
No luck so far. If I take the approach as mentioned in above link, it says something like
The base class includes the field '', but its type (System.Web.UI.ScriptManagerProxy) is not compatible with the type of control (System.Web.UI.ScriptManager).
what I need is just to add scripts via ScriptManager ONLY dynamically. Is there any way which is in practice good one too.