Forms Data Controls :: Nested GridView Control Returns "Object Variable Or With Block Variable Not Set" ?
Oct 20, 2010
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.
View 3 Replies
Similar Messages:
Jan 3, 2011
I am using three listviews on a page ... the first is always populated ... the other two are sometimes populated I want to total amounts and counts from all three ... so I set up steps in the DataBound events works great when all three listviews are populated the error "Object Variable or With block variable not set." occurs when LV2 or LV3 is not populated I've tried testing DataItem ... Is Nothing but get the failure on the If test instead
View 3 Replies
Oct 25, 2010
I have 2 separate code-block asp.Net expressions in an aspx markup, with an html content between (span element in the example below). In the first code-block, there is "i" as an increment variable for the for loop.Then the code-block is cut with an html content.And another code-block expression is opened but as I see I can reach the "i" variable which was declared in the previous code-block.
So, how asp.net handles -compiles- the pieces of code-block experrions declared in the mark up? Does it check the semi-colons and generates some anonymous methods which will end up with many calls to Response.Write in the last place?
<p>
<%for (int i = 0; i < 30; i++)
{
[code]....
View 2 Replies
Jul 16, 2010
I'm am not quite sure why I am getting this error.
Dim numUsers as Integer
Using myConnection as New System.Data.SqlClient.SqlConnection("Data Source=(local);InitialCatalog=dbtest;Integrated Security=True")
Dim queryString As String = "SELECT COUNT(*) AS Num_Of_User FROM tblusers WHERE username=@username AND password=@password"
Using myCommand as New System.Data.SqlClient.SqlCommand(queryString, myConnection)
myConnection.Open
myCommand.Parameters.AddWithValue("@username", requestName)
myCommand.Parameters.AddWithValue("@password", requestPass)
numUsers = myCommand.ExecuteScalar()
End Using
End Using
This error occurs on the first using statment.
View 1 Replies
May 14, 2010
have a look at this simple code snippet
[Code]....
Here second declaration of x gives error that "variable 'x' hides a variable in an enclosing block. I wonder why this error is not given for second 'i' variable declared in second for loop?
Since i am declaring second x in a separate for block, why this error is given for variable second x ?
View 4 Replies
Apr 7, 2014
I have this interface of multilevel grid built in VStudio 2010 using asp.net.My grid will show the 2nd level then the 3rd (2nd grid as its parent) when plus signs are clicked. however the parent gridview loses its original width when the panel shows up. Is there a way to maintain its width so the design will be as is. See the picture by clicking the link
Attached image ....
View 1 Replies
Sep 24, 2010
[Code]....
I am getting error of in Foreach loop
[Code]....
How to resolve this situation or any other alternative to cum out of this problem.
View 6 Replies
Jan 3, 2011
If ((intCustomerCount Mod intColumns = 0) And (intCustomerCount > intColumns)) Or (intCustomerCount = intColumns) Then
View 3 Replies
Apr 1, 2010
I was wondering, if I create a page e.g. index.aspx and I create it's contents based on a variable, would an AdSense block always show the same ad? Meaning is there a way to give it a dynamic content and having the ad addept to the content without creating a page for each content.For example I have a site with 3 links: pears, apples and lemons. I have a database which has the content of each page. I have a dynamic page index.aspx which modifies it's content based on the clicked link (the link always returns to index.aspx). If I want an ad to match my content, should I then do it differently? Like creating pages for each link and adding the content to each page dynamicly based on the link or something?
View 1 Replies
Mar 17, 2011
I need to get the value from a field in a GridView and and set that to a Session variable, however, it does not seem to be working...
Here is what I have:[Code]....
I am getting System.NullReferenceException: Object reference not set to an instance of an object.
View 6 Replies
Apr 12, 2010
I'm attempting to create a mailto in a gridView as follows:Code Behind (Page_Load)
[Code]....
ASPX Page
[Code]....
The hyperlink field will not grab the mailString variable. It's blank whether I use my constructed string or just the basic "TEST" string. What am I doing wrong?
View 7 Replies
Jun 28, 2010
I believe my SQL statement is sound. UPDATE [062610] SET abc = @abc FROM [062610] WHERE (dayID = @dayID) I cant seem to get my stupid variable @abc to sync with my GridView update command. I understand that I can let the GridView take care of my editting for me without having to write any code. But, I am running multiple tables and will be eventually needing to do this manually. Or at least as far as I know.
View 3 Replies
Mar 21, 2010
On Page1 of a project, I have a Gridview showing a table of customer names (showing CustID, CustName, CustJoinDate). When I click on a record, I have passed a querystring to Page2 showing an address table for that customer. This part works for me.
The SQL statement in simply: Select * from CustAddress where CustID = @cust
What I would like to do though, is capture that @cust to a session variable so that I can use it later on.
View 2 Replies
Sep 22, 2010
Can I assign a value to a variable (int) and never lose this value inside any scope? the problem is I am assigning the value to the variable in some scopes but the variable returns to its default value (zero) in other scopes..
protected void Button_AddNewCourse_Click(object sender, EventArgs e)
{
ID = 10;
}
so when I am trying to use ID in other functions it falls back to zero
protected void AnotherFunction(object sender, EventArgs e)
{
// Variable ID here is zero
}
View 3 Replies
Jan 14, 2010
I'm trying to pass a value (address) from a listview control using visual basic to a google map address control on the page load event. Here is the code I have so far in vb:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'Pass address from Listview to Googlemap address
GoogleMap1.Address = ???
GoogleMap1.Zoom = "14"
GoogleMap1.ShowScaleControl = True
GoogleMap1.EnableInfoWindow = True
[Code]....
View 3 Replies
Aug 2, 2010
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.
View 3 Replies
Nov 23, 2010
i calc the sum of columns using:
begBal = Utilities.SumDataColumn( "begBal", dt);
Then in the rowDataBound event i add the total to the gridview footer:
[code]....
I would like to know how i can set the gridview display=false if the begBal variable above =0?
also I set the format of amount columns in the html and code as {0:n2}. How could i add a check box to show no decimal places {0:n0} in the grid (columns and footer)?
View 3 Replies
Aug 3, 2010
For example:
<asp:HyperLinkField Text="Edit" NavigateUrl="EditPage.aspx?var1=Variable1&var2=Variable2" />
I realize this can't be done through the page's mark up, at least I think this is so, but if someone could explain the easiest way the concept could work I'd be very appreciative. Basically, I just need a user to be redirected to a page with more than one variable in the url. If you are unclear with what I'm asking don't hesitate to ask me to explain a little better.
View 2 Replies
Oct 23, 2010
I have implemented globalization in my website by using Global Resources. I thought of implementing it not only on controls but in database fields. So for some columns which would be single columns in normal conditions, I considered multiple columns for different culture. For example if there was a [Title] column, I replaced it with [Title-en-US], [Title-en-GB], [Title-es-ES] and etc.I have a web page with a GridView control that displays the content of that table. In a normal case (without globalizing), I would have a TemplateField in the GridView like this:
[Code]....
I have columns for each culture defined in the system so that based on the user's choice, I display that corresponding column content.My question is I have no idea what I should set the Text and SelectedValue properties in HTML code above.Something like this: Text='<%# Bind("myTable.[Title-" + TheSelectedCulture + "]") %>' !!!!!
View 3 Replies
Sep 6, 2010
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 Replies
May 27, 2010
[Code]....
[Code]....
Get Gridview item template textbox value to string variable?
View 5 Replies
Oct 7, 2010
I got a variable of type System.Drawing.Image and need to convert it to a variable of type byte so I can store the image in the database. Can someone show me how to do that in VB.NET code.
View 2 Replies
Dec 24, 2010
I have a webform developed in VB.NET and I am facing a strange problem. In the webform I have a GridView control which has two bound fields (Item # and Item name) coming from a master table and infront of these two fields I have placed a TEXTBOX control as TEMPLATE FIELD to take any value of particular item. But after filling all the textboxes when i clicked on submit button it loops thru the items and there i need to read the textbox value of that particular item in a variable but unfortunately the value is blank even the data is there. Here is the ASPX code.
[Code]....
Here is the Code behind
[Code]....
View 4 Replies
Sep 23, 2010
For some unknown reason I suddenly am unable to create an object variable for a Linq Data Class. If I create a new project and try the process again with the same database everything works as advertized.The code I am using is Dim db As New RoggDataContext which gives me an error on the object variable "db": Overload resolution failed because no accessibility 'NEW' accepts this number of arguments.I have looked inside every file in the Web Project like the web config to check the connection string, gobal, and designer.vb looking for any errors whit no JOY. I also tried to create a new form and code behind with a button and received the same error.This is mind blowing because as I already stated, I can create a new Web Site and the problem goes away.
View 3 Replies
Oct 12, 2010
store textbox(inside the gridview) information in single variable"
View 3 Replies