Is there a way to convert nulls in all the fields in a table into blanks using transact sql? For example strings will be "", numbers will be 0, and dates will be "1/1/1901".
I have over 500 columns, I don't want to go over each column and change the default value.
I have a table in sql having a numeric data type column,Now i want that whenever user left this field blank from front end aspx page, null value should be inserted in this column from stored proc.How can i achieve this? Also what kind of data type is most appropriate on front end for such taking kind of value?
View 2 RepliesSo I finally managed to create a control which basically shows a bunch of Panels with an extra property. I use it like this:
[Code]....
This renders fine and shows the text in the TabPanel controls. However, when I replace the plain text with something a little more exciting, say an UpdatePanel so it looks like this:
[Code]....
Then I get this weird error:
Page cannot be null. ensure that this operation is being performed in the context of an ASP.NET request.[InvalidOperationException: Page cannot be null. ensure that this operation is being performed in the context of an ASP.NET request.] System.Web.UI.UpdatePanel.get_IPage() +647672 System.Web.UI.UpdatePanel.Render(HtmlTextWriter writer) +20 SP.adminonly_reports_loginreport_aspx.__RenderTabPanel1(HtmlTextWriter __w, Control parameterContainer) in D:....eport.aspx:37 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +115 System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer) +13 System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +42 TabPanels.TabPanelHolder.Render(HtmlTextWriter w) in D:e4Webwwwrootlms_workingTabPanelsTabPanelsTabPanelHolder.vb:146 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +253 System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +87 System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +53 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.Page.Render(HtmlTextWriter writer) +38 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4240
If I take out the UpdatePanel and replace it with an ASCX control I made that simply puts database data into some DropDownLists, like this...
[Code]....
Then the page loads, but the data is not loaded into CustomerUserList1, and the dropdownlists within it are all blank. CustomerUserList1 has worked fine for years when used directly in a normal Panel/Page UpdatePanel.
[Code]....
I have an HTML report, with each print page contained by a <div class="page">. The page class is defined as
width: 180mm;
height: 250mm;
page-break-after: always;
background-position: centre top;
background-image: url(Images/MainBanner.png);
background-repeat: no-repeat;
padding-top: 30mm
[Code]....
This is having problems if the phone number is NULL or BLANK. Is there a way to fix it?
I want to display a blank text box if the date in the table is null. Any ideas on this using MVC 2 RC? 1/1/0001 12:00:00 AM displaying for Null DateTime in Html.TextBoxFor(model => model.IssueDate)
View 11 RepliesI'm used to using VB.net for web programming.Often, I have something like:
Dim s as string = Session("s")
I get a string value for s from the web session. If there is no value in the web session, I get a blank string.However, AFAIK, in C#, I have to have something like the code below to do the same thing.
string s;
try { s = Session["s"].ToString(); }
catch { s = ""; }
I have house_info table in database and I have dropdownlist in my page that bind it from Shoppingcenter columns from house_info table...
in Shoppingcenter column in some rows are data and some rows are NULL
now when I bind dropdown list it shows space in first Item after that it shows other Item that bind from house_info table I mean in dropdownlist shows NULL value (Space) that is in Shoppingcenter column
below is SP
ALTER procedure [dbo].[selectcentercityS]
@city nvarchar(30)
,@region nvarchar(5)
,@district nvarchar(30)
[Code] .....
I don't want it shows space in dropdownlist. What should I do?
below is House_info table in database
Id Behtop Service1 Service2
1 1111 Estate Null
2 2222 Home Home1
and I have 2 Textbox in page that users can enter text on them and update House_info tables column service1 and service2
below is SP:
@Service1 nvarchar(20)=NULL,
@Service2 nvarchar(20)=NULL
as
begin
update House_info set
Service1=@Service1,Service2=@Service2
END
and behind code
_cmd.Parameters.AddWithValue("@Service1", TxtMT1.Text);
_cmd.Parameters.AddWithValue("@Service2", TxtMT2.Text);
problem is that if users enter text in TB and click on button it update columns data but if they don't enter any thing in textbox it enter space in Table like:
Id Behtop Service1 Service2
1 1111 Estate
2 2222 Home Home1
I want if users don't enter any thing in text box it insert in table "NULL".How I can do it?
How should i insert null values into a database. I have textbox1 and the textbox2 will convert the value out of textbox1, when i the time i click save and the textbox1 is empty i got an error, "Conversion from string "" to type 'Date' is not valid." i just want to insert null value if the textbox is empty.
View 1 Replies[URL]
how do you handle null data on gridview? and also the white spaces, it seems that the white spaces are converting to " "
Note: i can't replace the because i have 1 column thats in html form.
I am converting my datatable to LISt using LINQ how do I handle nulls coming from database
List<Port> portDetails = new List<Port>();
DataTable dt = ds.Tables[0];
portDetails = (from q in dt.AsEnumerable()
select new Port
{
PortCode = q.Field<string>("Code"),
ExtCode = q.Field<string>("Nb"),
Name = q.Field<string>("Name"))
}).ToList();
In the above query if Code is null I do not want property portcode to be set to the value it should only set if it is not null or not blank
PortCode = q.Field<string>("Code"),
What should be syntax
I was trying somethign like this which doesnt work
Portcode = q.Field<bool>("Code") == null ? null : q.Field<bool>("Code")
I have a dataset.table which has some null values. am trying to trasform this using xslt to display like excel. If the value is null, then that node is ommitted by the xml. i tried deafulting the null values from the database itself and thats not generic. Handling null values is troublesome. I tried couple of methods to default null values by looping and thats not optimal solution. I used LINQ to handle null values but couldnt comeup with a neat solution. what am looking for is a generic optimal solution to handle these values.
View 2 RepliesI have a FormView that is loaded with a records from my DB. Some of the fields may be blank or null. I am trying to check the value of some of the text boxes to verify that the user has updated the fields prior to allowing a DB update from the Edit Template.
I can not seem to get the correct syntax on the if statment to check the value of the text box....
[Code]....
How to allow null value on my program?
for below statement, "WARNING_TYPE" IS NULL..
but when I run, it promp me error..what are the correct statement should i write. tq all
l_Connection.ConnectionString = constr
l_Command.Connection = l_Connection
l_Command.CommandType = CommandType.Text
l_Command.CommandText = " SELECT UNP.EMPLOYEE_ID, UNP.UNPAID_DAYS, ABST.ABSENT_DAYS, WARN.WARNING_TYPE " +
[code].....
The following code works well as long as I pass a querystring value to the datalist.
Private Sub BindGrid()
Dim id As Integer = Integer.Parse(Context.Request.QueryString("id"))
Dim strConnString As String = ConfigurationManager.ConnectionStrings("Conn").ConnectionString
Using con As New SqlConnection(strConnString)
Using cmd As New SqlCommand()
cmd.CommandText = "select Id, Name from tblFiles where Id=@Id"
[Code] ......
However, the page errors with the message "Value cannot be null." if I don't pass a value. I know that DataList does not have an EmptyItem Property like a Gridview control. I do not want the page to error if I don't pass a value. Need info to deal with empty values in a datalist.
Most websites have pointed me to this code to use:
<FooterTemplate>
<asp:Label ID="lblEmpty" Text="No Result" runat="server"
Visible='<%#boolean.parse(([b]list[/b].Items.Count=0).ToString())%>'>
</asp:Label>
</FooterTemplate>
The 'list' throws an error. The error is "Too few type arguments to 'System.COllections.Generic.List". I am not sure if the code is written in C# and that is what is causing the error. It seems that it should work but I can not figure out the 'list' error.
On my development machine, the session state data is retained after a post back to the server. (XP VS 2008) (This is true if running from within VS or if running in browser with localhost.)On the deployed test server, the session state is blank in IE, but works in Firefox. (Svr 2003 IIS 6)Both machines are running the exact same code with the exact same imputs and same web.config. There is no code between the post backs that write to the session state.Newest addition to the server would be the consumption of a WCF web service. Could this be a symptom of something missing on the server(s) when trying to connect with WCF? I could not find any information other than installing the 3.0 framework. I have 3.5 SP1 installed on the test server.
View 2 RepliesI have 2 table Table A, Table B.
Table A - Parent Table
ID - Uniqueidentifier not null(PK)
Table B -Child Table
ID - uniqueidentifier null(FK, TableA)
I have a stored procedure to insert data into Table B, but when I tried to insert a null value into column ID of table B, this error came up:
The INSERT statement conflicted with the FOREIGN KEY constraint "FK_tableB_tableA". The conflict occurred in database "database name", table "table A", column 'ID'.
The statement has been terminated.
The insert statement in asp.net is like so:
sqlcommand.parameter.add(New Sqlparameter("ID", Nothing))
I am guessing adding nothing to the null value column is the problem, but i don't know how to fix it... The INSERT statement conflicted with the FOREIGN KEY constraint "FK_tableB_tableA". The conflict occurred in database "database name", table "table A", column 'ID'.
i am using the following in a stored procedure.
[code]....
[Code]....Handling NULL...Field not updating when NULL?
I have a webapplication based on MonoRail, where we utilize the routing feature from MonoRail. On the first request after the application has started, the routing isn't initialized. To circumvent this, I have the following code in Application_OnError():
public virtual void Application_OnError()
{
if ( // identified as routing error )
Server.TransferRequest( Context.Request.RawUrl, false );
return;
}
Problem beeing that on our development server (which runs server 2008 R2, with IIS 7.5 and .NET 3.5) returns a blank page without headers, but on my workstation (which runs win7, IIS 7.5 and .NET 3.5) it works fine.
What could be the cause of this? If the code in Application_OnError() throws an exception, what would be the expected output?
I have verified the following:
The access-log shows one entry, I'm not sure if a TransferRequest would show up as a second entry when invoked successfullyThe application actually do some work according to my internal logs, and it doesn't die since a subsequent requests works flawlessly (because routing will be active)
I have a form which a user can fill in x times with the data they want too. The form is posted to the following Action.
[HttpPost]
public ActionResult Manage(ProductOptionModel DataToAdd)
{
if (!ModelState.IsValid)
{
return View(DataToAdd);
}
var ProdServ = new ProductService();
if (DataToAdd.ID != 0)
{
//Edit Mode.
DataToAdd = ProdServ.EditProductOption(DataToAdd);
ViewData["Message"] = "Option Changes Made";
}else
{
//Add
DataToAdd = ProdServ.AddProductOption(DataToAdd);
ViewData["Message"] = "New Option Added";
}
var RetModel = new ProductOptionModel() {ProductID = DataToAdd.ProductID};
return View(RetModel);
}
So at the bottom I blank the model (Leaving just the required field) and then return to the view. However the view holds the data from the previously submitted form. I have debugged the code and checked that the RetModel variable is empty.
In my table below string are present which I have to replace *@*$*86$*$ with blank, how can I do? Here bold can be 0-99, in any row.
xOsyH *@*$*86$*$
M. V. *@*$*81$*$ .
I have a web project which works fine on my local development machine.
I copied the project to our UAT server, setup a virtual directory pointing to the project and configured it to run on .NET Framework 4.0. I even added the Default.aspx page to the Documents tab. I configured Directory Security to use Windows Authentication.
When i try to access any web page within this application, IIS responds with a blank page. I looked through the event logs and don't see any errors anywhere.
I have this code in c# and I want to convert this to T-SQL and put in stored proc. I'm having a problem in speed as I am processing more than 50000 records at a time and the Update statement slows it down. I was thinking stored procedure could help on my problem. here's what I have:
sqlStmt = "SELECT DISTINCT(phone_no) FROM TEMPTABLE WHERE sUSER='" + USERName + "' ORDER BY phone_no";
I wanted to know, if there is any way to convert a Powerpoint presentation [on the server] to images. Like, I have written a same code for the Desktop using PIA's. But was wondering if it is possible to do the same thing on the server?
View 3 Replies
