I need to do a lookup in a DatagridView column. I would like something with the blazing speed of what recordset.seek used to provide. I am assuming that a similar function/method is available for use with the DVG. What else is there to use that is better than my present implementation.
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I am trying seek by looping thru a table for the closest match to a search item.
The following code works to a degree. It gets me within say 20 records of the target. I think it works somewhat but it may not be at all.
Code:
Private Sub Find_Item_In_Column(ByVal Search_Field As String)
'Pass a field name to do a string search on
Dim Find_Item As String = InputBox("Enter an Image File Name")
[Code]....
I used the data wizard to establish the connection and I am using VB 2008 Express.
In this case the data field will be a file name and it will be unique. Since the search for string will be a partial of what a file name might be. My expectation is that INCR will match the data row and can then be used to position the TrainImageBindingSource. So far it gets me close, but I am wondering if it is really working at all. I would like to arrive at the closest match (up or down one) found.
Can any one see any glaring errors or point me to an example(s) of similar code snippets?
Data in Table1 is as follows
Code-------product--------weight
1-------------Apple----------2.00
2-------------Mango---------3.25
[code]......
Data in Table1 is as follows
Code-------product--------weight
1-------------Apple----------2.00
2-------------Mango---------3.25
3-------------Banana---------6.50
Then I have Datagridview with three columns same as
Code, Product, Weight
I have following codes
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
str = "SELECT desc1,weight FROM master where code =" & Val(DataGridView1.Rows(0).Cells(0).Value)
dt = GetTable(str)
If dt.Rows.Count > 0 Then
DataGridView1.Rows(0).Cells(1).Value = Trim(dt.Rows(0).Item(0))
DataGridView1.Rows(0).Cells(2).Value = Trim(dt.Rows(0).Item(1))
End If
End Sub
When I enter 1 in row(0).cells(0) then other two columns fill automatically, but when enter 2 in next row then nothing retreived from database.I think this line should me modified as current row and current column.
str = "SELECT desc1,weight FROM master where code =" & Val(DataGridView1.Rows(0).Cells(0).Value)
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 RepliesHow can I search, for example ID Number, and want to highlight the listview item found in search from my first form? I'm using combobox from my second form to search.
View 6 RepliesI have a datagridview with 2 columns, 1 is Batch_Number and another is Existing_Stock, there is about 6000 rows.My question is, I want to be able to write in a TextBox and hit a Search Button to search the Batch_Number column and filter out or highlight the row with the matching number to see the Existing_Stock
View 9 RepliesI'm in a bit of a quandry. I am trying to build a simple search form where the user selects the column title and in puts the criteria then clicks the search button. This is the code I am using
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
details = ComboBox2.Text
'column name selected by user
specifics = TextBox1.Text
'criteria input by user
[Code]...
I have been trying to find out how to resize listview column width to the largest widthor either column header or item in c#
[URL]
I have a DataSet that contains 1 DataTable, and the DataTable contains only 1 row of data. I want to loop through all columns in that row and say:
Column name = column value
so for example if the column name is FAVORITE_FOOD and the value is pizza, I should display FAVORITE_FOOD = pizza I can get the column name from column.ColumnName and the value from Rows(0).Item(0), but for the life of me I can't put it all together in a simple loop.
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 am trying to use the .net connector within my program. I have got add, delete and update working however cannot get search to work. What I would like the program to do is, you enter a value into a textbox and then press a button. The value in the textbox is searched and then the values in the database corresponding to that value are entered into the other text boxes. This is what I have so far:
Private Sub PrescriberSearch()
pre.SelectCommand = New MySqlCommand("SELECT Name FROM Prescriber WHERE Name =?Name like Name = ?Name")
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Im trying to find out what code i would use if i wanted to search all my records in a table for those who are female...but the problem is what kind of place i should store these records initially, Mdf or Mdb? i've tried using dao code (rs.findfirst...but it says theres an error about read only database or something...)
View 8 RepliesI am trying to use RAP (rabid application development). So I have created a database with a datagridview to show all information and textboxes to modify the informations. So far so good.
The problem is created when I try to use the search facility on the datagridview. The search is working but the problem is that the textboxes are not following the search criteria . I can configure this manual but I would like to know which is the easier way to configure the textboxes to show the value of my search criteria.
I also want to know how when I finished with the search criteria and empty the search the text boxes to make the connections back as they were before.
how can i add item into next column when my first column add to 5 items it will automatically move to next column and continue to add item in 2nd column.
View 15 RepliesIm writing a simple VB program that connects to an oracle DB which retreives and inserts data to a table I created.[code].....
I want to be able to search through a table I have created to store all the information.Rather than just searching for one variable which would be easy to do, I want to give the user the option to filter out the search from the form.So say the user hits "Find", they would be given access to 10 comboboxes, they would select the information they want to search for (They do not have to select every box) and then click "Do Find".Then the form would display all the results of the query in the form.
I am trying to do a SQL query that checks for the presence or absence of a character's occurance in a field / column as a condition to retrieve the row. In this case I only need to test for existance of the specified character and in a similar query to test for the non existence. Not where it is or how many, just is it there or is it notI am using VB express.net 2008 and it uses, I think, MS SQL Server 2008.Using VB's instr() I can tell straight away if a string does or doesn't contain a character, but I would like to know this before I retrieve the row.
using the
WHERE .... and [mytable.myfield] LIKE 'Q'
or
WHERE .... and [mytable.myfield] NOT LIKE 'Q'
produces a result, but not a correct result. It does something but I can not say that it is working even part way.CHARINDEX gets an undefined function error MATCHES also gets an undefined function error?CONTAINS looks like it should work but I am still getting sytax errors with it, so I don't know how to use that predicate yet.
I performed a search by completing this information in my form:
TextBox1: the user types DB-20-RTS
DateTimePicker1: selects 7 april 2004
DateTimePicker2: selects 7 april 2004
[Code]....
I don't have errors of syntax in my code the only problem is when I press the search button (it doesn't store me in the columns of datagridview the 5 things I want).
when i run my program and put Jamie in textbox 1 i get the erros Column 'Jamie'.and the line below is highleighted with that erros
Code:
Dim sqlResults As SqlClient.SqlDataReader = _
sqlStatement.ExecuteReader()
here is the code for that sub
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
libraryDB.Open()
Dim sqlStatement As New SqlClient.SqlCommand( _
[code].....
In My Application, i have one Text Box, One List View Control and one Button. When I enter some text in Textbox and click the Button, it will highlights that search item in Listview Control.. if match was found otherwise nothing.[code]...
View 4 RepliesScenero: Users inputs the barcode numbers into a textbox, hits the search button and is returned the description of that barcode.
Database:
Two fields: Barcode - barcodes in this field
Description - Description revalant to that barcode
Form:
Consists: Textbox(Input) - txtBarcode
Button(Process) -btnClick
Listbox(Outut) - lstDetails
Code:
Dim con As New OleDb.OleDbConnection
Dim ds As New DataSet
Dim da As OleDb.OleDbDataAdapter
[CODE]...
This is the code i got to connect to the database itself. Then i got this code for the search part
Code:
SQL = "SELECT Description FROM Table1 where Barcode = '" & txtBarcode.text & "'"
What i need to know is:
1) Is the code for the search right.
2) How to get it so the description for that barcode is displayed in a listbox.
I have a datagridview and has two columns(UserName and Age), what want to do is to get the UserName that has lowest Age.
View 2 RepliesI have a datagridview which is populated from a datatable. This works fine. But if i run it more then once i get a column name "example" already belongs to this datatable. Ive tried everything to clear all the columns of the datatable and the gridview but still the same
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I have a DataGridView binded to a DataSet that I created using the Visual Studio Data Source Configuration Wizard. Everything works good except for one problem.I have two columns, Modified_By and Date_Modified that should be inserted or updated as the user and the current date, respectively. So every row in the DataGridView should have the same value for these two columns.So far, I have thought of two ways to get this working, but neither one seems very clean. The first idea is to make a custom Fill method that takes as parameters the user and the current date and then add them as extra columns in the select method. For example
View 1 RepliesI currently have this for search:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Using sr As New streamreader("C:moblist.txt")
While Not sr.endofstream
[code]....
I'd like to modify that to be able to put part of the name and it find it. example: Search for Banana Apple pie what it finds is 1743 = Banana Apple Pie Also I'd like when clicked the item from the listbox is displayed in a text box. If I use textbox.text = moblist.items(i) it only shows it when I search and not when I click. I've tried textbox.text = moblist.selecteditem but it does nothing?
I am using VB .NET 1.1 and wanted to make sure if inside a key value pair class "Dates" (collection type) a key by name "TerminationDate" exists.
If Not Dates.Item("TerminationDate") Is Nothing Then
'Do x y z'
End if
But this is throwing an exception: Argument Index is not a valid value.
How to Write Code in Vb.NET For Search Function having three item table?
View 1 RepliesI'm using VS2005 - Vb.net and connection to DB Ms Acceess. I type to one of Column in DB by number and binding it with TextBox.Text. As I know the properties of TextBox must be a Value not Text to match with that Column. But there is no Value Property.
View 3 RepliesI'm just a frustrated noob trying to get past my first DB Program. My goal is to get relational data from different tables all ordered by a certain field..Ive noticed early on that i cannot select a column when its name has a space.[code]Now the statement i want to use is sql = "SELECT [PT.Chart Number],[PT.Last Name],[CA.Case Number] FROM Table1 AS PT INNER JOIN Table2 AS CA ON PT.Chart Number = CA.Chart Number ORDER BY PT.Chart Number"..When i Debug i get the same type of error ("... Can't find column name PT.Chart... ")I'm new to sql so i dont know if my syntax is off.
View 4 RepliesI'm using vb2005. I'm writing a little application which allows a person to type in a new value in a combobox (which I've bound to a field in a table) which can be updated to the database. I then refresh the dataAdapter by clearing it and re-filling it again when the user saves a new item. That part works fine. My problem occurs when the user selects a stationary item from the combobox. The first select works fine until they try to select another item. Then I get the following error: ConstraintException was unhandled: Column 'TYPE' is constrained to be unique. Value 'False' is already present.
View 2 Replies