Cast Ienumerable Into Specified Cast Using Cast?
May 1, 2010
I have following code in my class file which returns me the Date field in format like 4/4/2010 12:00:00 AM from SQL SERVER
public IEnumerable Mthgetcomplaintdate()
{
var v = objderma.USP_Patient_Dermatology_Complaints_RepDate(PatientID); ;
return v as IEnumerable;
}
But on my aspx page i want to display only the Date part not time.One way is i will iterated throgh my dropdownlist which am binding with the above method and i convert it using Toshortdatestring() method.But i want to cast the whole Ienumerable result using some method? I have read about cast<> ,but could not understand how to implement it exactly.
View 1 Replies
Similar Messages:
Apr 1, 2011
table1 row = _db.table1.FirstOrDefault(r => r.ReferenceID == refNumber);
Is there anyway to cast row to IEnumerable?
((IEnumerable<table1>)row) - does not work
View 1 Replies
Mar 11, 2011
At the moment I'm trying to keep a certain site (asp.net) alive long enough for its replacement to be build in php. However I don't know much about .net or asp.net.
We are getting this error:
Specified cast is not valid. Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidCastException: Specified cast is not valid.
[Code]....
View 3 Replies
Mar 2, 2011
I have created a folder called "Controls" in my asp.net application. In that folder are user controls (1 being DateRangePicker.ascx for example). Now I am creating a class in my app code folder and I am trying to cast something to a DateRangePicker,
DateRangePicker drp = (CambitCMS.Controls.DateRangePicker)gvListing.Parent.Parent.FindControl("ucDateRangePicker");
And I am getting the following error:
Error 2 The type or namespace name 'Controls' does not exist in the namespace 'CambitCMS' (are you missing an assembly reference?)
How do I properly reference this user control in a class?
I want my "ListingsBasePage" class to reference my DateRangePicker usercontrol, but if I put a namespace around the whole user control code it breaks the user control, it says all the things like the textboxes, labels, etc dont exist in current context when a namespace is wrapped around the code.
Here is the start of the class "ListingsBasePage" where I am triyng to reference the usercontrol
using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
[code]...
View 2 Replies
Mar 12, 2010
How can I cast from object to GUID in asp.net???
View 4 Replies
Jan 5, 2011
I m trying to cast DataTable.Rows to DataRow in VB but could not manage!
Here is the sample code:
[Code]....
View 2 Replies
Oct 28, 2010
I am having problem, these are the errors:
[Code]....
These are the codes:
[Code]....
View 2 Replies
Aug 18, 2010
I've already checked the row returned by my sproc and all the fields match my OcItemConstraintDetails class.
Not sure why I am getting the error below :(Error: Specified cast is not valid.
[Code]....
My code:
[Code]....
View 4 Replies
Dec 8, 2010
using vs2008 and building a web app. On a asp page called blackjack.aspx, I have four labels with id of lbBJTStatusP1 lbBJTStatusP2 lbBJTStatusP3 lbBJTStatusP4.I want to address those labels in a single sub by casting the casting two strings into the control name, so that string lbBJTStatusP & "1" would refer to lbBJTStatusP1.This is done on the code behind page. So far I have tried this but with no success. boxct refers to either "1" "2" "3" or "4".DirectCast(blackjack.Controls.Find("lbBJTStatusP" & boxct, True)(0), Label).BackColor = stoodcolor
View 1 Replies
Jan 19, 2011
-update start
Unable to cast object of type 'namespace.Student' to type 'System.Data.DataRowView'
<%# FixNull(((System.Data.DataRowView)Container.DataItem).Row, "Name")%>
protected string FixNull(DataRow dr, string fieldName)
{
if (dr != null)
{
if (!dr.IsNull(fieldName))
return (dr[fieldName]).ToString();}
return " ";
}
-update end
in the below method expecting an object, so how would i cast it to that type? i always get null no matter what column.
calling from .aspx:
<%# FixNull((mynamespace.Student)(Container.DataItem), "CreatedBy")%>
.CS
protected string FixNull(object dataItem, string fieldName)
{
if (dataItem != null)
{
DataRowView drv = (DataRowView)dataItem;
if (drv != null) //always getting null
{
if (!drv.Row.IsNull(fieldName))
return (drv[fieldName]).ToString();
}
}
return " ";
}
View 2 Replies
Jan 13, 2011
Why can't I do this?
if ((bool)Request["genericError"] != true)
{
return;
}
Compiler gives me:
Cannot convert type 'string' to 'bool'
Request["genericError"] should be an object, so why does the compiler think its a string?
I'm looking for the reason for this, not how to sidestep it (using Convert)
View 4 Replies
Mar 4, 2011
I am trying to get a master's page instance without cast.
Something like this but without cast
var masterPage = (MasterPageName)Page.Master;
if (masterPage != null) {
masterPage.Foo = false;
}
Is there any workaround for this?
View 1 Replies
Jun 29, 2010
just needing a 2nd set of eyes looking at this to make sure the error isn't something else other than my LINQ code here. Here's the function class itself:
[Code]....
For some reason it's flagging the 2nd line in the GetJacketByPolicyID function saying the specified cast is not valid. So I'm guessing it's something I'm doing wrong. I'm sure the tblPolicy/tblPolicies class works right since I can create a new instance of a tblPolicy and set a few variables by hand and return it, so that's not it. I've also checked the datarow I'm fetching and there's no null values in the record, so that shouldn't be it either.
View 2 Replies
Aug 22, 2010
I'm getting the following error message:
Unable to cast object of type 'System.Data.Linq.DataQuery`1[Username]' to type 'Username'.
I've been searching but can't find a solution. This particular table has 4 columns. The first column is the int indentifier. Column 2 is "username" (varchar50) and is the primary key. Column3 is "userID" (uniqueidentifier) and column 4 is "active" (varchar5)
[Code]....
View 7 Replies
Jan 9, 2011
This has never happened before. It is not happening even in my visual studio. It is only happening on the live site. This never happened before on the live site either. I changed the master template but the change I made had nothing to do with the issue here. 3
[Code]....
Exception Details: System.InvalidCastException: Conversion from type 'DBNull' to type 'Integer' is not valid.Source Error:
[Code]....
Line 25: <asp:DataList ID="DataList1" runat="server" DataKeyField="AParentID" DataSourceID="ObjectDataSource1" RepeatColumns="2" ShowFooter="False" ShowHeader="False" Font-Bold="False" Font-Italic="False" Font-Overline="False" Font-Strikeout="False" Font-Underline="False" HorizontalAlign="Center" CellSpacing="0" CellPadding="0" ItemStyle-Width="225" Width="500px">
Line 26: <ItemTemplate>
Line 27: <asp:Image ID="Image1" runat="server" ImageAlign="NotSet" ImageUrl='<%# GetImage(Eval("AParentID")).ToString %>' />
Line 28: <asp:HyperLink ID="HyperLink1" runat="server" Text='<%# Indent(Eval("ACategory")).ToString() %>' NavigateUrl='<%# String.Format("articles_view_subcats.aspx?catid={0}",DataBinder.Eval(Container.DataItem,"ACategoryID")) %>' ForeColor='<%# GetFont(Convert.ToInt32(Eval("AParentID")))%>' Font-Size='<%# GetFontSize(Convert.ToInt32(Eval("AParentID"))) %>'></asp:HyperLink>
Line 29:
View 4 Replies
Jul 25, 2010
I've got a list of teams which seperate into different leagues. I'm trying to show the user the league that they are in and show it from where they are in the league. This is the error I'm recieving:Specified cast is not valid. 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.InvalidCastException: Specified cast is not valid.Source Error:
[Code]....
Source File: E:WebSitesohuntControlsLeagueWidget.ascx.vb Line: 24 Stack Trace:
[Code]....
This is my page code:
[Code]....
Code-behind:
[Code]....
View 9 Replies
Aug 2, 2010
here's my code...
select SUM(PETTYAMOUNT) AS tot FROM FINPETTY WHERE PETTYAMOUNT IS NOT NULL AND CENTER = '1'
if (drReadera.HasRows)
{
double totamta = Convert.ToDouble(drReadera["TOTALSUMA"]);
Label2.Text = String.Format("{0:N2}", totamta);
}
note: some of the pettyamount is null that's why i've got an error in page.
View 3 Replies
Sep 29, 2010
I have a little problem developing a SQL Select Statement on a column that is formatted pretty badly. Firstly, the Database has already been created and filled with Data in a Test Environment, I'm not sure if the format is the same or has been updated in Production but since I'm only able to work with the Test Environment right now I'm stuck with using what I have. The Column in one Table shows a Snapshot of a clients account which is set to VarChar(50) but the actual data in the column is formatted like a money format (with a $ and decimal point so for example "$5,000.00" would be an entry in one Row).
What I'm trying to do is a create a WebService that will be used in a iPhone Application and one of the Methods needs to just give a quick display of the total value of all Clients with each specific company but I can't perform a SUM function on a VarChar column and I've tried to CAST and CONVERT the column into money, int, decimal and just about every format I can think of but I keep getting an error stating that I convert the data type varchar to which ever one I'm trying. I think it has something to do with the $ already listed in the Column, so I wanted to know what I could do to either remove the $ sign (like a Trim option) or if there is a better way of doing this that I can't think of. I know the best option would be to convert the column to the appropriate format but as I said, this was a previously designed system and I'm not sure if the Production area is the same (most likely not).
Here's what I've tried so far:
[Code]....
View 5 Replies
Sep 14, 2010
Case "System.Int32"
Return Convert.ToInt32(a) + Convert.ToInt32(b)
Object cannot be cast from DBNull to other types
View 3 Replies
Mar 5, 2011
I'm a noob to ASP.Net and I'm working on a simple project. In this project I have 2 drop down lists.In one drop down list I would like to select a panel web control and with the other select the background color for that panel.I can change the background color by calling the method Color.FromName() but selecting the panel object by casting it to a panel object from a string in a drop down list is stomping me.This is my starting code:
protected
void
Button1_Click(object[code].....
View 2 Replies
Jun 12, 2010
I am getting exception: "Specific cast is not valid", here is the code
con.Open();
string insertQuery = @"Insert into Tender (Name, Name1, Name2) values ('Val1','Val2','Val3');Select Scope_Identity();";
SqlCommand cmd = new SqlCommand(insertQuery, con);
cmd.ExecuteNonQuery();
tenderId = (int)cmd.ExecuteScalar();
View 4 Replies
Oct 31, 2010
here's my error...
Exception Details: System.InvalidCastException: Object cannot be cast from DBNull to other types.
here's my code.
double totald = Convert.ToDouble(drReaderdeduc["TAMT"]);
totaldeduc.Text = String.Format("{0:N2}", totald);
the problem is the query output is null but i convert.todouble so got an error... what is the best solution if the record is null?
View 2 Replies
Oct 15, 2010
I'm using the default SqlMembershipProvider,but I've created a custom MembershipUser class (SoeMembershipUser) because I needed a "DisplayName" property.All the DisplayName does is look at the UserName and format it differently.When I try to cast a MembershipUser to a SoeMembershipUser user I get an InvalidCastException.
Exact error is:
"Unable to cast object of type 'System.Web.Security.MembershipUser' to type 'Soe.Tracker.SoeMembershipUser'."
Here is the code that fails:
SoeMembershipUser user = (SoeMembershipUser)Membership.GetUser(username); // invalid cast
I have also tried casting later like so:
MembershipUser user = Membershipship.GetUser(username); // ok
...
string displayName = ((SoeMembershipUser)user).DisplayName; // invalid cast
Here is the SoeMembershipUser class:
NOTE: I left off the constructors at first, but added them in later when I started having problems. Adding them made no difference.
public class SoeMembershipUser : MembershipUser
{
public SoeMembershipUser()
: base()
[code]...
View 2 Replies
Sep 1, 2010
I have a .Net 2 solution with some asp classic pages.I get a specified cast is not valid error when I access the page on my local. Below is the vb function where I get the Error:
Public Function Retrieve(ByVal vntSeqId As String, ByRef vntPart As String, ByRef vntPartKey As String, ByRef vntEntDate As String _
, ByRef vntStatus As String, ByRef vntOrigGblId As String, ByRef vntOrigNetId As String, ByRef vntOrigName As String, ByRef vntOrigPhone As String _ [code]...
At first, I thought the problem is with the source code and we were thinking the source code we have is different with the ones deployed on test and prod servers. But when I tried to upload it on the test server, I don't get the specified cast is not valid error.
View 1 Replies
Feb 8, 2010
comparing integer values which are actually in string (varchar(9)) right now...I'm trying to do the following in a stored procedure..
SET @MinProjectYear = SELECT ProjYear FROM P_A WHERE ID = @ID
SET @MaxProjectYear = SELECT ProjYear FROM P_A WHERE UserId = @UserID AND...
IF EXISTS(SELECT 1 FROM P_A WHERE MinProjectYear <= MaxProjectYear)
return true
The MinProjectYear and MaxProjectYear are varchar(9) values stored as "2007-2008", "2009-2010", etc.
How do I split and compare the years?? i.e. check if 2007-2008 <= 2009-2010 ??
View 6 Replies
