I have a csv file. I need to open it, delete whole row on basis of a column value, Update few of the column values and save the file as .dat file. I am using VB.net 2010
View 1 RepliesI would like to insert, delete and add rows in tablelayoutpanel1. On my right I have numericupdown1. So, when I chose let say number 5 and then click button1, I would like that in my tablelayoutpanel1 VB add or insert row 5. Same thing with button2 - but this button deletes selected row.[code]...
View 2 RepliesI have text files with X Y Z data. There are three columns, one each for X, Y and Z and the files are tab delimited.The value of X is constant over a (repeating) range of Y. Z is the dependent variable.
For example:
0 1 44
0 2 32
0 3 22
[code]....
I need something to take this file and break into multiple tab-delimited columns. In the output, I would like the initial range of Y to be the first column (ie 1 to 4). Then, the second column should have the Z values for that domain (X=0 in above example). Then, the next column should have the Z values for the next domain of Y (i.e. 1 to 4 again, but now for X=5 in above example) and so on. Also, I'd like the first line value in each of the new columns containing Z values to be the X-value they were originally associated with.Thus, I'd like the output file to look like
Y 0 5 9
1 44 66 51
2 32 11 72
[code]....
I want to edit the rows and columns of an excel file using vb 2010 express. NOTE : I dont want to open .exl file but want my program to read and edit them according to user. PS : I want to edit them according to cell number.
View 6 RepliesI'm going nuts with this. Obviously I cannot open the reader ard writer on the same file simultaneously.
[Code]...
What I need to do is open a csv file which contains 4 fields and many rows, then I want to do different operations determined on the value in the fields.
for example :
My CSV will be in the following format.
ID,Name,Number,Status
Heres what I have so far
Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles OpenFileDialog1.FileOk
[Code].....
How would i delete only the successful inserted rows for insert and then move the non successful rows up and allow the user to correct the data and get it ready for an insert. If i dont delete the successful rows then i will have multiple inserts of the same dataRow and we dont want that! AND if i dont move the data up then it will have blank rows uptop and will end the try and not insert the corrected data. You can better see what logic i am trying to perform at the bottom of my code, right after I insert into the database. Here is my code.
Private Sub btnLaserGenerateTicket_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLaserGenerateTicket.Click
'Function declarations
[code]....
How would i delete only the successful inserted rows for insert and then move the non successful rows up and allow the user to correct the data and get it ready for an insert. If i dont delete the successful rows then i will have multiple inserts of the same dataRow and we dont want that! :) AND if i dont move the data up then it will have blank rows uptop and will end the try and not insert the corrected data. Here is my code.
[Code]...
I am having trouble updating or deleting rows that were just added to my form. If I close the form and then open it again everything works as intended. Below is a bit of code from the project.
'Delete row from DataGridView
Try
MasterDataSet.PaintStock.Rows(PaintStockDataGridView.CurrentRow.Index).Delete()
[Code].....
I have an Excel sheet that looks like this.
View 1 RepliesIn the previous reply, you showed how to open a CSV in Excel. How does one determine the number of rows and columns that were imported?
View 1 RepliesI have Dataset ds filled up with values Until now I was displaying values in GridView. Now I want that all the rows should be columns and columns should be rows.I have 2 options: Either 1 I can directly convert grid to columns and display it, or 2 I can convert the GridView to html and then write loops to convert. I was trying the 2nd option but I cant figure out how I should do that.[code]With this code I am still getting same as GridView. Please help me for converting rows to columns and vice versa.
View 1 RepliesI'm trying to insert a couple of fields into a csv config file and then update all other rows in the file at the same index by copying the previous 2 entries. I'm reading through each row and converting the row into a list(of String) because it seems to be the most flexible way. Ine initial insert works fine, but the code below doesn't. The actual insert code is:
[Code]...
pcIndex is the list index value from elsewhere in the code at the insertion of the 1st of a pair of values into one row. I need to update that index point and pcIndex +1 in all other rows. However it's not doing anything. Tried using lstSteps.Insert, InsertRange, etc. Am I using this right? Is there a better way? It seems to be over-writing the entry rather than inserting a new column and moving the others up, so it appears the list capacity value isn't updating - so I'm left with the initial row with 4 more entries than the others sticking out of the file.
I am using this code to Add rows to a SQL database, and it adds the row to the SQL database if column 7 is not null. After it adds the row to the SQL database, it deletes it from the Access Dataset, and updates the Access Database. Sometimes double rows seem to get inserted into the database, so I'm thinking there is an error in my logic somewhere here.
Dim rowcount As Integer = AccessDataSet.AccessTbl.Rows.Count
Dim y As Integer = 0
For x = 0 To rowcount - 1
txtRow = AccessDataSet.AccessTbl(y)
If IsDBNull(txtRow(7)) = False Then
[Code] .....
It was even difficult coming up with a Question title for this.
Am not sure whether am using the right approach to my problem. See i have this datagridview that contains rows that i would like have saved back into the Database as new rows but with a column altered to a new value.
Eg
PKColumn1 FKColumn2
Column3 Column4
1 1
[Code].....
What am looking at is Change FKColumn2 (some foreign key, maybe i can also have a combo box somewhere on the form and an "import to") values to something like 2 and save the rows back to the database without loosing the original rows.
I am trying to read and save data into a access Database but using the rows and colunms valeu can
View 1 RepliesI am creating a project in VB.NET in which one of the reports require that the name of employees should be displayed as column names and whatever work they have done for a stated period should appear in rows below that particular column.Now as it is clear, the columns will have to be added at runtime. Am using an ODBC Data source to populate the grid. Also since a loop will have to be done to find out the work done by employees individually, so the number of rows under one column might be less or more than the rows in the next column.Is there a way to create an empty data table and then update its contents based on columns and not add data based on addition of new rows.
View 1 RepliesI need to save a datatable to a binary file , in binary format , in order to make the process fast because the datatable may contain up ten millions rows. So , XML is not favorable because it makes the file large sized , and the process will be slow.
I managed to save the datatable to a binary file , and it works fine , but the problem when I try to add new rows to the existing binary file (using a datatable with the same schema , but different rows data) , it copies the schema of the datatable to the binary file, making it very large.
[Code]...
my deletecommand delete all my rows whenever i delete a row..but when i view it again the other rows still there and the i deleted is actually deleted.[code]
View 5 Replies*WeightCheck is a dataset connected to a mdf SQL server file..Datagrid on form is bound to the dataset..This code executes because datagrid on form updates with the deletions..[code]
View 1 RepliesI have taken this part from a previous application that works. This does not display any thing in the grid when i watch it it does show that it got 1 row but in reality it does not display it
Private Sub btn_all_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_all.Click
Dim con3 As New SqlConnection("xxxx")
[Code].....
I am stuck on how I go about using the nested for loops.Add code in the Draw button�s Click event to create the number of rows and columns selected, using the character selected Use nested For loops to create the rectangle of characters based on the user selections. The outer loop will control the number of rows. Use the value selected in the Rows combo to determine the stopping value of the outer loop. Use the value selected in the Columns combo to determine the stopping value of the inner loop, which controls the number of characters per line.
Public Class MainForm
Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
cb_Rows.Items.Add(1)
cb_Rows.Items.Add(2)
[code]....
I am using a button to read a txt file and then make and then make an xml file. What I want to do is clear the current xml file and add the new data row by row.I'm getting stuck at "addrow". I don't know how to do this. Anyone know the solution? I've been googling for 3 hours
The part where i'm stuck is Email_To_Data.Tables.Add.NewRow(). I just don't have any idea how to start adding new rows to my cleaned xml data.[code]...
I have a student database in ms-access format with 3 tables
1) class ( classid, classname)
2) subjects ( subjectid, classid, subjectname)
3) students (studentid, classid, studentname)
now i want to create a form to enter exam marks for the students in the following manner:
studentid, studentname, classname, subjectname1, subjectname2, subjectname3, .... subjectname-n
1, student1, class1, marks, marks, marks, marks, marks
2, student2, class2, marks, marks, marks, marks, marks
3, student3, class3, marks, marks, marks, marks, marks
how i can i convert subjectname from row to column and how to write a new table to store exam marks for this purpose.
I'd like to copy some rows of data from a data-bound datagridview to a different datagridview.I thought adding a row would just be like this: [code]The trouble is that, instead of copying all the data from the row and putting it in the correct cells in the other datagridview, it seems to be taking the whole row object and putting it in the first cell, so the first cell contains this: [code]And the other rows are empty. How do I make rows copy properly?
View 3 Repliesi want to make a datagrid with 2 columns and many rows
the columns i want to have databinding with a datatable
i want the 1 row 1 column of datagrid have data from 1 row of datatable
i want the 1 row 2 column of datagrid have data from 2 row of datatable
[code].....
[Code] The code in above had already create rows and columns(row=20,column=8),and all data have already insert into datagridview1 when i click button1. Now i want insert data again when i click button2. Because the datagriview have already create rows and columns. In button 2, i don't want create again rows and columns, i just want insert 10 rows data into datagriview1. Which part that i need to eliminate?
View 2 RepliesI have the following data structure in a data base.
Table File
- File_ID (PK)
- File_Name
I am using Datagridview to show some table data from database. It is working but its appearance is not what i am looking for. Is there a way to edit columns and rows manually ?
This is a list of what i want to do :
1. First of all i want to change column captions. because they are like "Fld_name" etc.
2. There is a column that shows date. I want to write a code for it ( convert date type )
3. I want to add a button at the end of each row and write a code for it ( show detail about that record )
In my application i need to move rows and columns in tablelayout panel at runtime.like how to we are doing at designtime.
View 3 Replies