SQL Parse Column Values?
Aug 13, 2009
I have a a few checkboxes that I want to be checked based on a value of columns in a table.So I have a table that has a date column and I run a search based on a particular date. Then I want to be able to go through the rest of the columns based on the selected date. But I need to be able to check individual values. Not sure if this is making sense. It is for a checklist. I want to click on a date, and it will auto populate checkboxes based on what was pulled from the db.
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Jun 3, 2011
am trying to calculate the values in rows in column 6 based on values of column 5. Bellow is the the code I am using I get a run time error about the string not formatted properly
[Code]...
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Mar 19, 2010
I am trying to parse a file generated by LGA Tracon that lists the position data for aircraft over a given time frame. The data of interest starts with TRACKING DATA and ends with SST and there are thousands of entries per file. The system generating the file, Common ARTS, is very rigid in its formatting and we can expect the column spacing to be consistent. Here is an image to preserve the exact formatting Here is a reduced text file.
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Mar 22, 2011
What I'm trying to do is parse a CSV file that has column headers, and map those headers - ideally to a class.The tricky part is that I need to be able to support various mappings because it will be interacting with different systems that give the headers different names. Additionally, being able to combine fields would be extremely helpful.
Fortunately, the CSV will always be correctly formatted with all fields encapsulated in double quotes.
[Code]...
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Jan 15, 2011
I am editing BINary file and i need to parse some values from it without corruption of file, unfortunately I was try everything, but I dont know how to parse it on the byte level. I know how to read, write, search bytes from files but not how to parse it.
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Apr 20, 2010
I currently receive spreadsheets from clients which include several date fields. Since these are coming from many different sources, the date formats can vary widely (although they will all be US format). It could be "April 19, 2010", "4/19/2010", "2010-04-19", etc. I would very much like to use the DateTime.Parse function rather than having to write my own parsing function--I don't want to have to write out every possible combination of date strings.
The problem is, the DateTime.Parse function includes default values if all values are not supplied. So if the field comes in as "03/2009", since no day was specified, the function will return a datetime equivalent to "3/19/2009" (today's day along with the values given). I cannot use this. If a client provides a date that is incomplete, my program must produce an error, not fill in default values for them. Is there a way to tell DateTime.Parse not to use default values? Or perhaps there's another function that can parse multiple string formats into DateTime type without using defaults?
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Feb 23, 2009
I coded a class that scans an object and maps data from a data table into each one of the corresponding properties, it works very well, however I am not able to set the property of one of the child (coplex objects)
Public Class CntrConfHdr
Private m_CntrConfHdrID As Double
Private m_HeaderCode As String
[Code]...
I want to set the value for the child object TypeCurrency.TypeCurrencyID thus I set the value of the variable sTargetPropertyName to TypeCurrency.TypeCurrencyID but the application willnot work stating that the property can not be found.
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Sep 14, 2009
I have a string I want to parse. I could write the code to do so, but I figured that VS.NET has a parser that should do this for me.however, I can't find it. All the searches I do return info on how to parse numeric values in string form into real numbers. It would be nice if the MSDN search had some ways to allow users to enter more details than just search text and 3 ways to filter out irrelevant stuff. In any case, I also tried things like string.parse (nope - although I kinda figured this would be it.) I also looked at Enum.parse, but the code indicates that it works with arrasy of items, not strings.
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Jan 4, 2011
i have retrived this datatable from datasource and i want to add a more colum 'category'basedon the each value of each Role, like if role column has the value '90 daya client' then in the same row it should have a value 'DC' in the category column.n make a temporatry dt1 table but to add related values.
S.No First Name Last Name Role Date
1 Us er1Name User1Name 90 Day Client 11/01/2011
2 User1NameAtt1 User1NameAtt1 90 Day Client 11/01/2011
[code].....
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May 28, 2010
I want to add all the values of a certain column. I already get the value of an exact cell value but when i add the loop code for it to continue,it doesn't performs well.
[code...]
I,m using vb6 po with datagrid component.
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Jun 8, 2012
I just want to parse simple expressions like IIF(FVAL(PFC) = TRUE, (IIF((ORGVAL(BAS, "2012/12/31") + ORGVAL(DA)) < 6500, (FVAL(BAS) + FVAL(DA)) * 12%, 780)), 0)`After parsing this I should be able to know what functions contains what parameters.
[Code]...
I'm stuck with .Net Framework 2.0, so no Linq or lambda expression goodies for me. Also I want to include the code in my custom library and not just reference it. Can anyone point me to some good library or code.
I just need to parse and not evaluate the expression and find what tokens are in use. After finding the tokens I need to change the expression string before parsing, like if the function ORGVAL is used then the parameter passed has has to be prefixed by an underscore. Like ORGVAL(BAS) will transform to ORGVAL(_BAS). Some functions can have tow parameters like ORGVAL(BAS, "2012/12/31") and this will transform to ORGVAL(_BAS, "2012/12/31")
NOTE: IF THERE ARE OTHER WAYS OF DOING IT PLEASE LET ME KNOW. I WOULD LOVE TO AVOID A PARSER AND LEXER.
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Nov 30, 2011
I have a datagridview, I am importing csv into it, I want to add a new column "Test Column" and populate that column with row numbers [code]...
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Jun 10, 2011
I am able to connect to my MySql Database.How can I list all of the values from a column.I would like to list all of my "Username" column's value.[CODE]....
What is the sql query for it? So far I only know SELECT and INSERT. And then listing all of the values to the Items in my ComboBox.
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Oct 5, 2011
I have a table called Table1 which already has a few other columns and 4 rows. I want to add three new columns to it. When the columns are added I want all the cells in the column to equal the variable I supply in the Add method. When I add the column named "BatchID" it works beautifully, but when I add "UserID" it gives an error "Cannot find column [iqz9]". Why? This is how Table1 should look like:
[code]...
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Jun 2, 2011
i want to dynamically add the values in the column of a datagridview the row of which is also being created dynamically...
Form1.TextBox10.Text = total
con.Open()
cmd = New SqlClient.SqlCommand("select product,Quantity,MRP,Sale_Rate,Disc_Amt,Amt from sale_table ", con)
[Code].....
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Mar 17, 2010
I have a database and a dataset as the image shows in the link, how would i add the values of the colums "amount1" and "amount2" for every row and entry as the user make entries to be automatically displayed in the "total" column. Meaning that every time values are entered in those amount columns, they will be added and the total displayed in the "Total" column.
[URL]
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Aug 10, 2010
I have a GridView and by RowDataBound event I change the values of my last column. I want my last column to have as values the sum of each row.
Below is my code
If e.Row.RowType = DataControlRowType.DataRow Then
'total of row
Dim i As Integer
Dim total As Integer = 0
Dim dt As DataTable
[Code]....
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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.
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Sep 9, 2009
tell me how I count the number of times a specifc value appears in a column within a DataGridView?
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Aug 9, 2010
I am trying to get distinct values in column 2 of a DGV using the following LINQ query:
Dim AllocatedRoomTypes = From r In Me.AllocatedDGV.Columns.Cast(Of DataGridViewCell)() Select r.ColumnIndex = 2 Distinct
but I get the following error:
Unable to cast object of type 'System.Windows.Forms.DataGridViewTextBoxColumn' to type 'System.Windows.Forms.DataGridViewCell'
I understand that the problems lies with the Cast, but I do not know how to correct it.
What I am trying to acheive is this:
Value is Column 2 of DGV
Double
Double
Single
Twin
[Code]....
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Jan 25, 2009
I have a db with Column name Break. I have attached to my datagrid view and all that works and shows up correctly. However Im needing to put this code in a timer to get all the times in the Break Column but I need to get it from each and every row. For example:
Break
6:00am
7:00am
6:30am
I need it to look through each row and get that value. Ive tried various things, but Im not on my normal computer so I cant post my code.
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Sep 8, 2010
I need to find rows in resultsets that have every column without null.these resultsets got variable number of columns.currently, the only way that I can think of is creating a view on each resultset and filter this way:
select field1, field2, field3, field4, ...
from "huge query"
where field1 is not null and
field2 is not null and
[code]....
and then in a storeproc/function or .net code(c# / vb.net) loop through all rows / columns and flag or remove every row that got any null?
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Jan 20, 2012
I want to loop through a databale and change the values of a specific column in that datatable.eg: the database returns Request_ID, Desc, Date and Status_Ind. The Status_Ind column contains integer values. I dont want to show the integer values to the user. I want to convert that to a string value based on the integer values returned in that columns.
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Oct 12, 2011
ei guys how to compute values in a datagrid column.. we have just tried some codes but it appers false anyway.. just need it badly.. i just have 30 min. :CCC
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Mar 15, 2012
i have a datagridview on my form with customers info which is linked to my database. i want to execute a line of code based on the information in one of the columns in the datagridview??? for example i have a datetime column which stores dates(and maybe time) i want to use an if statement(or any code) to compare the date the customer entered. if its today then my code will execute!!
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Nov 11, 2010
Dim cmd As New SqlCommand(SQLSTR, conn)
reader = cmd.ExecuteReader()
Dim myDataTable As New DataTable
[code]....
i hve the follwoing code by which i bind the data to the grid the grid has 4 columns PRODUCTNAME, QTY,RATE, AMOUNT the user shld be able to edit the data in the column qty for as many rows it has but i m not able to edit this column how do i edit the values in the cells of column(1) ie qty?
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Jan 17, 2010
I have a datagridview with 2 columns.What i want is to enter numeric values into 2-nd column and to have the sum of this value in the last row (no matter how many values aka rows i will have). And also how can i have the last row fixed considering further actions.
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Jul 9, 2009
I have a datagridview with 2 columns.What i want is to enter numeric values into 2-nd column and to have the sum of this value in the last row (no matter how many values aka rows i will have). And also how can i have the last row fixed considering further actions.
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Mar 9, 2011
Like "SELECT DISTINCT(Col)" in sql query, how do we perform this in datagridview?[code]...
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Nov 15, 2009
I am working on a program where the user inputs values, then the program calculates those values and outputs the sum. When the user hits the button exit then those values entered by the user are saved. When the user starts the program again, the values are still there. I wrote the code and everything works fine. I am saving those values in notepad... and the program grabs the input in notepad and outputs those values to the program. But here comes the problem:
Lets say the user wants the information in a certain column to be added to another column somewhere in the program. Is that possible ? And if it is can it be done when I am saving those values in notepad ?
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