Web Forms :: Null Values For Get And Set
Sep 30, 2010info.Text += " Filiale " + oUser.Filiale.Filialnummer;
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Forms Data Controls :: Formview Insert Adds All Null Values - Update Doesn't Update Values
Apr 12, 2010I have a typical gridview/formview master control setup. When I try to update or insert I don't get any errors but it also doesn't work. When I try to insert data all I get are null values and when I update, none of the values are updated. The formview looks like its working, but just doesn't. The primary key is an identity and it auto-increments by one.
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Data Controls :: Check For NULL Values Sum And Display Values In GridView Cells
Apr 3, 2013i am using a gridview in my web page,i used to bind the database records to the gridview..my columns are name,empid,company name,pl leave,sl leave,total leave taken here total leave taken is not a database fields,in the page i want to fill the records once loaded pl leave and sl leave is added and display in the total leave taken column..it working properly when all pl ans sl columns fill with numbers,if some pl and sl leave having blank values.it showing an error like input sting was not in correct format..this is my code
<Columns>
<asp:BoundField DataField="slno" HeaderText="SerialNo"
SortExpression="slno" />
<asp:BoundField DataField="ecode" HeaderText="Employee Code"
SortExpression="empcode" />
<asp:BoundField DataField="ename" HeaderText="Employee Name"
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Web Forms :: How To Pass Null Values To Database
Nov 3, 2010my table field allows null values. but my code below does not work unless a value is assigned to my variable even though the glable variable is initialised to 0; tried the DBNull.Value - still, it gives me error as the table in question is linked and expecting a value.
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Web Forms :: Null Values In Session State?
Feb 16, 2010I need to pass some values around using session state. My approach is to first check if my session variable is null and if it is not, then proceed with my C# logic. Is that correct? Will my Session variable ever contain garbage in it, like a corrupted string? Or will I be guaranteed that it is null if not explicitly set.
if(Session["MyVariable"]!=null {
// Do some logic }
Web Forms :: Binding Datetimes Around Null Values
Jun 1, 2010I am trying to bind datetimes from a database to a Calendar in a TemplateField in a GridView using C# (following the tutorial at [URL]). The datetime is nullable in the database and this apparently kills the Calendar (one entry is null). How do you modify the SelectedDate and VisibleDate to check for null values? Do you have to create a custom binding? If so, how?
View 5 RepliesWeb Forms :: Display NULL Values In TextBox
Jan 25, 2012I have a remarks column which allows null values.. When i try to load a selected row from gridview
Which has nothing in remarks..I get displayed in the textbox where i need to load the remarks.. I do not want to be displayed.. If nothing is there in that remarks column textbox should be blank.. How do i do this?
Forms Data Controls :: Insertion Of Null Values Using VB
Aug 4, 2010I am having real trouble at the moment trying to input NULL values into a field. what I want is, using VB, the ability to insert into parameters NULL values.
View 3 RepliesWeb Forms :: Deal With NULL Values With Regex Validator?
Jun 26, 2010I have some fields in my db that have a value of "NULL". These are displayed in the Data controls as "NULL". When I try to commit an update the Regex validator is catching this and not allowing the update because it doesn't match the pattern of the regex.
I've thought of one way of solving this, which is to add the value "NULL" to the pattern for the regex. I'm curious though if there is a better way to solve this issue.
Web Forms :: How To Replace Null Values To 0 In Dynamic Pivot
Apr 27, 2016I tried to convert the (null) values with 0 (zeros) output in dynamic PIVOT function but have no sucess. Itried with below code but getting below error,
'SNULL' is not a recognized built-in function name.
DECLARE @columns NVARCHAR(MAX)
DECLARE @sql NVARCHAR(MAX);
SET @columns = N'';
SELECT @Scolumns = ISNULL(@Scolumns + ',','')+ 'ISNULL(' + QUOTENAME(Name) + ', 0) AS '+ QUOTENAME(Name)--HERE AM GETTING ABOVE ERROR
FROM (
SELECT Name FROM #Temp
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Forms Data Controls :: Default And Null Values When Inserting?
Nov 18, 2010have a form where I insert record via DetailView control. I have some string fields. For each string field (nvarchar in sql) I have defined the Default Value in the SQL SERVER (2008) as ''. Also I have added to each InsertParameter of the DetailsView a DefaultValue="".Yet still, if the user enters no value for one of the string fields, NULL is inserted into the table.
View 4 RepliesForms Data Controls :: How To Handle Null Values In While Loop
Apr 16, 2010i am unable to handle null values in while .even i tried to handle condition is breaking and coming null value comming inside loop.
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Forms Data Controls :: Passing Null Values To ObjectDataSource
Jan 4, 2011This is an ASP.NET 3.5 web app written in C# using VS2008 and connecting to an MS SQL backend. It is using ad hoc queries in a strongly typed dataset to pull from the database. This query (shortened for clarity) is designed to allow optional input of parameters (a requirement) or pull all records if no parameters are input. It works normally in SQL Server Management Studio with the addition of Declare and Set statements and it works normally in the TableAdapter's Query Builder:
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The markup contains this ObjectDataSource, which is tied to the TableAdapter with the above query:
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The problem I'm having is in passing null values to the ODS to feed to the query. Tying the ODS parameters directly to the dropdownlists and textboxes didn't work. Got an error message that there was a mismatched data type. Tried several combinations of code to feed the right values to the ODS parameters but couldn't find one that worked. Is the problem in the query or am I setting up the code-behind wrong? Here's the code:
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Forms Data Controls :: Gridview Non-visible Values Always Go To Null?
Jun 24, 2010Whenever you turn off the visibility of a column in Gridview, on Edit, the value becomes null because its never bound. The only way I know of stopping this behavoir is to put it in the DataKeyName list. Is there any other way to prevent this? I have quite a few columns that will not be displayed in this "release" but I want there for future extensibility. Also, in some cases these values will be used for calculations but the user should not see them. Is there no toggle property for "non-visible" items to remain "unchanged" or something of the sort?
View 3 RepliesForms Data Controls :: DataBinder.Eval And Null Values?
Aug 16, 2010I have a hiddenfield in my datalist .....and its databinded like this
<asp:HiddenField ID="SecondLevelCategory" runat="server" Value='<%# DataBinder.Eval(Container.DataItem, "SecondLevelID") %>' />
the problem arise when this datacolumn in my database have a null value, it throws an error ....how can I get this to work so that DataBinder.Eval can take a null value?
Forms Data Controls :: Old Values Populated As Null From ListView?
Mar 28, 2010m using a listview and an object data source in my application, with optimistic concurrency control.i have only 2 columns in the listview: category_ID and category_name;when i try to delete an item, an error message is generated saying that one of the old values populated by the list view is null, i performed debugging, and found that the category_ID old value is populated correctly, while the category_name old value is populated as nulli can't find a problem in the code, i executed the delete command in the query builder directly and it worked fine,
View 2 RepliesForms Data Controls :: Making Checkbox Check If Values Are Not Null?
Feb 28, 2011I have a Sql Data Source that queries my class database. What I'm trying to do to save myself some landscape is to check a checkbox if any of the pre-requisite fields are not empty. I have this laying inside a gridview. My code doesn't error out but it doesnt' do anything either.
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My query is like this:
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So in a nutshell, if there is any value in PR1 - PR7, I want to check my checkbox in the gridview.
Forms Data Controls :: Getting Null Reference On Labels That Im Setting The Values To?
Mar 23, 2010Why would i be getting NullReferenceException if im setting the labels with values?In my page_load i have the following:
Label hireMess = (Label)FormView1.FindControl("hireMess");
Label hireEnd = (Label)FormView1.FindControl("hireEnd");
HyperLink hyptry = (HyperLink)FormView1.FindControl("hyptry");
and right below that i have 1 condition to check for and then set the Text value of the 2 labels.hireMess.Text = "It Was Successfully!";hireEnd.Text ="You will be re-directed to your Pool in 10 seconds.";I compared the page to production and eveyrthing is the same and production doesnt have any issues.. not sure why its coming up null.The error comes up for the first label:Object reference not set to an instance of an object. 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 reference not set to an instance of an object.Source Error:
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Forms Data Controls :: Handle Null Values Being Assigned To A Calendar Control?
Nov 13, 2010I've got a detailsview control on a page. The table that it interacts with has a DateTime column in it. This column is nullable, and a lot of the records have null for that value. In the EditItemTemplate I've got a calendar control. When I try to put the DetailsView into edit mode, I get the following error message:
System.InvalidCastException was unhandled by user code
Message=Specified cast is not valid.
Source=App_Web_srpmlyjd
StackTrace:
at ASP.entries_aspx.__DataBinding__control44(Object sender, EventArgs e) in c:inetpubwwwrootMediaLibraryEntries.aspx:line 103
at System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding)
at System.Web.UI.Control.DataBindChildren()
I am convinced that the problem is the null values in the DateTime column of the table. I've done some web searches on this, and some have suggested placing some dummy values into that column, but that seems more like a kludge, rather than a solution. How do I keep nulls in the table, and yet not have that preceeding error come up when a user tries to edit the selected record?
Forms Data Controls :: Gridview RowCommand Event Returning Null Values?
Sep 2, 2010I'm trying to retreive values entered by users in the textboxes in the footer of the gridview and insert these values into another sql table.My code is as follows :-
protected void GridView2_RowCommand(object sender, GridViewCommandEventArgs e)
{
if(e.CommandName.Equals("addnew"))
{
TextBox t1 = (TextBox)GridView2.FooterRow.FindControl("tfrm");
string frm = t1.Text;
TextBox t2 = (TextBox)GridView2.FooterRow.FindControl("tsub");
string sub = t2.Text;
string cmd = "insert into suggestions values('" + frm + "','" + sub + "','c','c')";
con.Open();
SqlCommand com = new SqlCommand(cmd,con);
int a = com.ExecuteNonQuery();
GridView2.DataBind();
con.Close();
}
}
But the strings 'frm' and 'sub' returns null values.
Forms Data Controls :: How To Deal With Null Values In GridView Container.DataItem
Jan 23, 2011How to deal with Null values in GridView Container.DataItem
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Forms Data Controls :: Dropdownlist In A Formview - Insert Fails Because Of Null Values?
Jan 5, 2010I have a formview on a web page, set to insert mode as default. The form view is bound to a SQLDatasource. This datasource has a custom query written to select the details for this formview. The query joins two tables to provide relevant detail and not just an ID for one of the elements on the form view.
The first tabe contains information regarding projects and the second table contains detail regarding Resources. First table has the following definition:
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Forms Data Controls :: When Updating Gridview When Hide Columns Values Turn To Null?
Mar 5, 2010I am updating a gridview. Problem is that when I hide certain fields that I do not want the user to update, they lose their values ie. the data is wiped out in the field unless I show them on the grid and make them writeable. Is there a property I need to set for the field to retain the value when the grid is updated or is this in the sql statement?
View 7 RepliesWeb Forms :: Dynamically Created Control Is Not Accessible / Dropdown Returns Null When Trying To Get The Values On Submitting The Form
Nov 17, 2010Im dynamically creating several dropdowns onclick of a button... but the dropdown returns null when im trying to get the values on submitting the form... i read tat during postback all dynamically created controls will be lost... s there a way to register the controls... i want to access the item selected in the dropdown .... expecting a positive reply...
View 1 RepliesChecking For Null Values
Jan 28, 2010protected void rptNavigation_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e){
if (!((e.Item.ItemType == ListItemType.AlternatingItem) || (e.Item.ItemType == ListItemType.Item)))
{return;
}string Name = string.Empty;
if (IsDBNull(e.Item.DataItem["FullName"])) {
Name = String.Empty;}
else {Name = (string)(e.Item.DataItem["FullName"]);}
Literal ltlLiteral = (Literal)(e.Item.FindControl("ltlLiteral"));
ltlLiteral.Text = Name.ToString();
I get error for IsDbNull - Error 1 The name 'IsDBNull' does not exist in the current context. What's the best way to check for null values returned from db? also I get errors on both lines where (e.Item.FindControl(ltlLiteral")); is present ERror: Cannot apply indexing with [] to an expression of type 'object'
