Using TryParse And Nothing To Fill Date Column With NULL

Dec 7, 2010

With a Decimal, I use:

document.Air1 = CDec(IIf(Decimal.TryParse(Air1TextBox.Text, Nothing), Air1TextBox.Text, "0")) to fill the column with there is no value.

I would like to do something similar when the date is blank (preferably with NULL or just plain blank):

document.TestDate1 = CDate(IIf(Date.TryParse(TestDate1TextBox.Text, Nothing), TestDate1TextBox.Text, " - - ")) - of course, this throws an exception.

The table Data Type is date.

View 3 Replies


ADVERTISEMENT

Asp.net - Date.TryParse For Decimal Converting Date

Jun 16, 2010

I have string that contains "1.3" and I am checking with Date.TryParse method. It automatically converting into "1/3/2010". How to handle this?

View 1 Replies

Linq To Sql Null - Check Whether A Column Is Null

Jul 15, 2011

How to check whether a column is null i use the following code but I got this error "Input string was not in a correct format."

[Code]....

View 2 Replies

SQL Exception (adding A Null Value To A Non-null Column)

Aug 12, 2009

When I put a break point to the last if clause in the sub ("If (backOrder < 0) Then", see below) it runs until the break point, if I put the break point further below, I get the following error:

Cannot insert the value NULL into column 'OrderID', table 'WHM.dbo.OrderDetails'; column does not allow nulls. INSERT fails. The statement has been terminated.

I've discovered first hand that it only happens when prodqty is bigger then qtyOnStock, thus executing the if clause.

The code:

Private Sub NCOSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NCOSubmit.Click
Dim sqlText As String = ""

[Code]....

View 4 Replies

DataRow Not Produced Via DataAdapter.Fill If A Field Is Null?

Apr 20, 2012

I there a way to set up my DataTable so a field (or all fields can allow nulls if you can't set just 1 field) so oIDbDataAdapter.Fill won't leave out DataRows where a field contains a null value?

Dim oSqlCommand As SqlClient.SqlCommand
Dim oIDbDataAdapter As System.Data.IDbDataAdapter
oSqlCommand = New System.Data.SqlClient.SqlCommand( _

[Code]....

View 14 Replies

Pass Null Parameter Fill Method Of Tableadapter?

Jan 17, 2012

I have already defined in my SELECT statement in TableAdapter to tell it what to do if the parameters are Null:

SELECT a.ID, a.NameID, b.BNameID
FROM a INNER JOIN b
ON a.ID = b.ID
WHERE ((@NameID IS NULL) OR (a.NameID = @NameID))
AND ((@BNameID IS NULL) OR (b.BNameID = @BNameID))

View 4 Replies

Error 'Arguement Null Exception Was Unhandled, Column Arguement Cannot Be Null'?

Oct 20, 2011

I am trying to create a treeview in VB.net, the data has to be loaded from MSAccess 2010 database. When I try to run this program I get error : Argument Null Exception was unhandled, 'column' argument cannot be null and the program crashes. I have pasted the code as under:

Imports System.Data.OleDb
Public Class frmRating
Private Sub frmRating_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles

[code].....

View 1 Replies

Filter The Data In The Date Column To Show Only The Records That Don't Have A Date Entered Into The Field?

May 13, 2010

I have an access form that shows a data table. when the form is opened, I want to filter the data in the date column to show only the records that don't have a date entered into the field.

View 8 Replies

DB/Reporting :: Search A Table, Confining To A Specific Date Range Based On A Date-time Column?

Jul 14, 2009

Would it be possible to search a table, confining to a specific date range based on a date-time column, and get a count of the 10 most used words in a particular var-char column excluding a list of words?All in SQL?Currently I am pulling out the records that match and sorting through the contents outside of SQL, I would think where I can do it directly on the server it would be more efficient.(SQL 2008)

View 4 Replies

Change Date In Calendar Column To Reflect Date In Combo Box?

Apr 4, 2012

I have a calendar column which is generated on from load. Its value is assigned to todays date - for instance 04/04/2012

I also have a comboBox with a list of months.

Is there a way I can change the value of my calendar column to reflect the chosen month?

For example, if I select January from my comboBox then have the date as 01/01/2012.[code]...

View 5 Replies

Change The Forecolor If The Listview Date In The First Column Is Less Than Label 3's Date

Mar 16, 2009

It is supposed to change the forecolor if the listview date in the first column is less than label 3's date.

For ii = 0 To Me.ListView1.Items.Count - 1
Dim iInvoiceDate As ListViewItem = Me.ListView1.Items(ii)
If iInvoiceDate.ToString < Me.Label3.Text Then

[Code]....

No errors and all the variables are returning what i am expecting but it doesn't change the forecolor.

View 4 Replies

Fill A DataGridView By Date?

Mar 12, 2010

I am trying to fill my DataGridView using a date for my parameter. My first problem was in my code where I would get the common error message of Too many arguments to public overrides overloadable. I solved that error message by going into the dataset designer, selecting the query and adding RegDate as a parameter. Now my problem is that I will enter a date in my tool strip text box click the button and still get my data grid view filled with all the data.

Try
Dim RegDate As Date = CDate(RegDateToolStripTextBox.Text)
Me.PatientsTableAdapter.FillByDate(Me.Database1DataSet.Patients, RegDate)

[code]....

View 3 Replies

How To Set Value For Date To Null Or Nothing

Aug 30, 2009

I'm making a data application and using the data adapters, I created a query in the designer:
EmpActivities_TableAdapter.InsertQuery(IdTextBox.Text, ActivityComboBox.Text, DescriptionTextBox.Text, Cdate(adddate.text))
The question is how can I set the adddate to null or nothing and save it? I'm using SQL server for the data.

View 4 Replies

Create And Fill New Column?

Nov 14, 2010

I am using the following to strip out unwanted string in a string and i want to fill newly created column with split value. I dont know how to get the "Cityrev" into a column value[code]....

View 4 Replies

.net - SQL Server NULL DATE?

Jan 12, 2012

How can i remove this in my crystal report . this value is showing if my date field in null . "1/1/1900 12:00:00 AM". I don't want to show thin is my report.I have two dates , case open date and case close date . if the case is not closed its showing this value so i want to remove this.I am using sqlsever.

View 3 Replies

Add Date Not Null Validation In .NET?

Oct 24, 2009

This video shows how to add validation for a textbox:[URL]..what about date ? I can't make it work for date.

View 2 Replies

Calendar And NULL Date

Jun 23, 2012

I am working with calendar inside GridView using VB. I have some NULL date on the DDBB. I can fix the problem using EVAL, but when I try to save the date from the calendar, I got an error telling me that their is no @variable declared.[code]Everything is fine but I got: Must declare the scalar variable "@tDate" trying to save.This is beacuse I'm not using Bind, but with BIND I cannot run checkDate.

View 1 Replies

Change Date From Dd/mm/yy To Null?

Sep 15, 2011

i have a datetimepicker with showcheckbox properties set to true..

when there is date in database, the checkbox is checked..

but when the database is null, the checkbox is unchecked..

here's the code:

Sub checkeddate() 'to set DateTimePicker.check (compare from database)
'if db is not null, then CheckBox is checked
If IsDBNull(DataSet.Tables("AssetMaster").Rows.Item(curPosition).Item(19)) = False Then

[Code]....

View 9 Replies

Date With Empty/null Value?

Jun 23, 2009

i have a date control on form (vb.net) and by default its value is current date. i want to make its value to null or empty so that no date is shown and user choose from the drop down date calendar.

View 9 Replies

Make A Date Null?

Sep 2, 2010

Fix my code I am trying to put null in sql server through a function that is excepting _dtSWO.

If I set _dtSWO = Nothing it returns #12:00:00 AM# which throws an exception. The field is nullable in sql server I just want it to return a blank[code]...

View 2 Replies

Set Date Field To Null Value?

Dec 12, 2011

I am using visual studio 2010. I have a text box bound to a sql datetime field.I have to be able to either set or clear the text box. I can set it to any date fine, but when I try to clear it I am unable to save the record.i am using the binding navigator to save.

View 5 Replies

Way To Insert Null Date

Nov 24, 2010

I have some date fields that I want to not have any dates during a record creation. I figured the way to go would be to insert NULL. The way I'm going about it now gives me a Type mismatch error.[code]...

View 2 Replies

Fill ContextMenuStrip By Column In Database?

Jun 7, 2011

I use split button with ContextMenuStrip and i need to fill ContextMenuStrip with data in database like item name

View 2 Replies

How To Fill Column Of Existing DataTable

Mar 28, 2012

I have a table like this
col1 col2 col3
a b
c d
I want to fill the 3rd columns.

View 1 Replies

How To Fill Combobox Column In DataGridView

Mar 8, 2010

My DataGridView contains three columns, column types are checkbox, textbox and combobox.How can I load a row's combobox when the checkbox in the same row is checked?

View 1 Replies

Using A Column In A Database To Fill A Combobox?

Aug 6, 2009

I am using MS Access and i want to fill a combobox cmbFamily with data from a column called family in a dataset called availability and also a combobox called cmbModel with a column called model.

i have this:

cmbFamily.Items.Add(Availability.Columns.Contains("Family"))
cmbModel.Items.Add(Availability.Columns.Contains(cmbFamily.Text))
'and
cmbModel.Items.Add(Availability.Columns.Contains(cmbFamily.Text))

If you're not living on the edge, you're taking up too much room

View 5 Replies

Check Column Value For Null Vb?

Mar 11, 2012

i'm working with a database application and i want to check if there is a null value in a specific column but it works only when its not null but if its null it throws an exception automatically

i tried to change the nullvalue property of this column but i'm not able it shows a message that its not a valid property

i tried to change the source code in the code editer but it changes back automatically

View 7 Replies

Column Does Not Allow Null Values

Jul 30, 2009

I have a databound DataGridView and use a button to control updates.

The problem is that if a db Column does not allow a null value an error is thrown ("Column <ID> does not allow null values") and then the datagridview automatically removes the row. This error is raised as soon as the user leaves the cell and before the update command is issued.

View 3 Replies

Updating Column With Null Value?

Jan 24, 2011

I have a date field (smalldatetime) in a table and in particular cases I need to set the date field to null. Currently, when setting the sqlparameter.value property to a date

endDateParam.Value = "5/15/2011"
the field is updated with the proper date. However, setting it to
endDateParam.Value = System.DbNull.Value

[code]....

View 3 Replies

C# :: ITextSharp - XFA Fill Date/time Field?

Apr 12, 2011

we download a template form, prefill values which will be static, export a XML template
the XML is parsed with a .NET forms app, dynamic values are addedthe resulting XML needs to be imported back into the PDF templateAll goes well using the MergeXfaData method oniTextSharp, however for some reason, date/time fields are not being filled in (textfields and checkboxes work ok). Cannot figure out why. Searching through forums I discovered someone saying XFA only works for textfields. Why is this and how to work around?

View 1 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved