I cannot update the column value on a *.csv file. Will someone help me out in this.My code snippet is as follows:
Dim str As String = ""
str = "update data.csv set code=code+'Test' where id='aafes'"
da1.UpdateCommand = Conn1.CreateCommand
da1.UpdateCommand.CommandText = str
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I have column in database
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I want when any user search For: Delhi to Manali on between 17-Dec-2010 to 19-Dec-2010 then the price would be automatically changes to $900 in gridview else the default price wold be displayed in fare is $600 if he search for DelHi to Manali after 19-Dec-2010.
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
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update values in a CSV file.I would prefer to use ADO and write a query to update the values.
View 2 RepliesBelow code is supposed to update a table in oracle with rows imported. But it seems to update all columns in the table with only the first column which is imported from the CSV file. I figure its the "ReadFields" property which needs to manipulated/changed.
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i need the max ,min, avarage, for the 24 lines that lines counted from the line that contain the max date so i get the code for the max date for in the txt file this code used for both if txt file sorted by Ascending or by Descending
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
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I am using vb.net with access database. I am using sql. How can i update database with the value 40'6"(Feet and inches values)
View 5 Repliesi 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
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I have two text files, the first text file has two columns separated by a space (" ") and the second text file only has one column.
The column 1 in text file 1 and text file 2 match albeit in different order, what I'm trying to achieve is for every field in column 1 text file 2 I want to search for column 1 in text file 1 and display the matching column 2 field in column 2 text file 2.
Dim*OpenTextFile*As*String*= IO.Path.Combine("C:Test1.txt")
Dim*OpenTextFile2*As*String*= IO.Path.Combine("C:Test2.txt")
Dim*SaveTextFile*As*String*= IO.Path.Combine("C:Test2.txt")
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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.
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I,m using vb6 po with datagrid component.
Using VB.NET and SQL Server 2005//In DataGridView n number of rows was displaying. Suppose I edit some value in the datagridview cell then I click save means it should update in the table also. Suppose I click add button means it should add a new row in datagridview.
View 1 RepliesI 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]...
View 3 RepliesI 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.
I try an update but I get an error"The Index was out limits.I shouldn't be negative and should be smaller than size of the collection" This concern this line in debug "Dim courseId As String = gridViewCourse.DataKeys(e.RowIndex).Values("CourseId").ToString()" This my grid asp code
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I want to add the ability to post images to facebook or Flickr in my app.Basically, they just browser for the file using an OpenFileDialog to get the path. Then they click an 'Upload to Flickr' or 'Upload to Facebook' option.how to do the upload to facebook/flickr part? How is it done?
View 1 RepliesI use this command to retrieve information from an Access database:
Try
Dim result = From row In Me.ChitaDataSet1.chita.AsEnumerable() _
Where row.Field(Of String)("askID") = x _
Select row[code]....
how to Update a cell in specified row-coloumn coordinates?
Using VS2005, VB.Net, Dot Net 2.0, SQL Server 2000. If have some Columns (varchar and numbers) in a DataRow that I want to set to DBNull in the database. The fields as defined as Nullable in SQL DB table.
I have some fields that are populated when loaded but I want to update to be null using the ADO.Net data objects. If I try and use Row("FieldName") = DBNull.Value a 0 gets written to number fields (not sure what gets written to varchar fields.) What code should be used to update fields to Null using ADO.Net dataobjects?
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I can't seem to figure out how to update a single column for every row in my database...
con.Open()
Dim cmd As OleDbCommand
cmd.Connection = con
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What I'm looking to do is to update add a value to the given value already in the row. for instance:
id name value
1 peter 8
2 paul 10
3 mary 16.25
I just want to add a specific value to each row, such as "8"
id name value
1 peter 16
2 paul 18
3 mary 24.25
I need to update a column by adding a value in Access:
update table1 set column1 = column1+value
In the above, if column1 is null, then the table is not updated.
I need a function like in SQL Server:
update table1 set column1 = isnull(column1,0) + value
I've been looking around online, and havent quite found what im looking for.I have an unbound DataGridView on my form that has 1 columns ID and NAME, i did a loop to fill in all the ID columns. Then when i loop trough all the ID's, i want to update the NAME column with some data.
View 3 RepliesI have this Access Database. It has 6 Columns: ID | Class Name | Class Code | Class Room | Grade | Teacher My ID is the Unique Column that I need to reference back too when Updating my other Fields so I get the correct field. How do I do this? Properly.
I've been thinking of a method but I doubt it would work. First I would start off selecting all the ID's and then LOOP through all of them, and then rewrite them to to + 1 Each time I make a Delete, so Each Time it will be a consistent 1 2 3 4 5 6 7 8 9 10 .... etc... Then I can reference from that to my Combo Box Selected Index + 1 to get the Correct Row which corresponds with the Selected Item.
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:
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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)
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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]
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
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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.
tell me how I count the number of times a specifc value appears in a column within a DataGridView?
View 2 RepliesI 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
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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.
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.
View 9 Replies