I have two DataGridViews in one window. The first one displays 2 columns, itemNo and taskWhen I click on a row in this grid, I want to populate the second grid with corresponding material. It is organized so that the itemNo in grid1 is 1, 2, 3, and so on, and so when a row is clicked, I want grid2 to show data that is 1.0, 1.1, 1.2, 2.0, 2.1 and so on. This data is all available in a table that exists within a dataset. However, tableAdapters do not use the .StartsWith function. I am able to get the information from grid1 when it is clicked on using Me.DataGridView1.CurrentRow.Cells(0).Value.ToString but how can I use this to get the data from the table into grid2
I am trying to check if the string starts with certain words before I even add it to my item list, but it doesn't seem to return true even when it should return true.. File I am reading through with my application:
In my code I can easily use "where Obj.Feld = String", but using "where Obj.Feld.StartsWith("a")" doesn't work. See the following two functions:
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The first function (byFileName) works fine. The second function (LikeFileName) doesn't. Using Startswith I get "Object reference not set to an instance of an object." What am I doing wrong?Database is an array of Objects, a structure consisting of strings
I am working on my application as I am checking ip using with .StartsWith and .EndsWith method. If the ip is equals then it will equals with US. However I have got an error with end of statement expected error using with this line: [code] I have tried to use "And" instead of "&", but I still get the same error.
I have my mysql query selected fields (item_code, item_name, item quantity, item_selltype, item_selldetail) but some of these fields are variants.
Dim sqlConn As String = ("SELECT item_code, item_name, item_quantity, item_selltype, item_selldetail FROM qa_items") Dim objDataAdapter As New MySqlDataAdapter(sqlConn, objConn)
I have a DataGridView that I'm trying to populate using a For loop:
Dim serverName As String = SQLServerName + "" + Instance Dim server As Server = New Server(serverName) Dim Datatable1 As New DataTable For Each database As Database In server.Databases Dim row As DataRow = Datatable1.NewRow
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The DGV has been designed with the designer (columns, layout etc). Using the above the DGV does not populate. I was using a ListView for this but I need images in a subitem so have switched to using a DGV.
I was just handed a VB.NET prototyping effort, and I'm not very experienced with VB.NET.I had to create a stored procedure which returns a self-referential table in order. Once, I completed that I wanted to get a DataGridView to show the results.
Previously, my team has been doing a lot of this via the GUI designer of VB.NET so I don't have a ton of code to describe, unfortunately.I was trying to follow their pattern which I will briefly describe here:
I have a DataGridView whose DataSource property points to a BindingSource. The BindingSource points to a DataSet. The editor for that DataSet calls a TableAdapter which gets the data from the stored procedure.
I previewed the data for the TableAdapter. The data is there. On frmMain's load the TableAdapter's Fill command is run. Not seeing anything. And my hunch is that this is way too complex a process to be correct. Or maybe not. I did a lot of Google searches before I decided to bother you fine folks.
Using SQL Server 2008 I created a Stored Procedure called MyStoreProc and it runs fine from the Management Tools.
In VB.Net 2008 I created a new dataset and a new TableAdaptor. In this table adapter I created a new Query called FillByGrid and selected the Stored Procedure. Previewed data and it previewed correctly.
On a form I created DataGridView and selected the Table Adapter from the dataset.
I ran the app and no data is shown. Visual Studio autocreated the code below and I changed it to select the the Query I just created:
No data is shown on the grid so I tried the manual approach:
' Create the dataset Dim da As New SqlDataAdapter, ds As New DataSet Dim conn As New SqlConnection
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Still no data shown. However stepping through the I can see that the connection is open, and "da.Fill(ds, "tbl1")" takes a little bit of time as it is running the Stored Procedure and ds table has the correct number of rows and columns. Its just not being shown on the datagrid.
Creating another table adapter in the dataset and returning data from a database table using a standard select * from table command display in the datagridview fine.
I am trying to auto populate some fields in my datagridview on my form called frmInfo.
I will try to explain what I need. The main form of my project is called frmEntry. frmEntry is mainly a data entry form only. A binding navigator is present to navigate between different record stored in the database. I want the datagridview on frmInfo to "grab" info present in the text fields of frmEntry.
I am trying to click a checkbox in the datagridview to automatically populate a textbox in the same datagridview with the current date/time.
I have the following code which gives the error
Private Sub DgvReturns_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DgvReturns.CellClick If e.ColumnIndex = 4 Then
Im new to vb.net and would like to know the very basics on how a datagridview works? how does it populate data from the database? what process does vb follow to update this datagridview? I'm trying to get my head around the following terms and need some explaining how they work and how they are linked? if possible, is there a link to a diagram that explains this?
I'm connecting a MS-SQL remotely with VB2008 Express.I defined two different methods - the first one is copied from my old VB6 application, which is working perfectly.In this application, the retrieved data is added to a listview control, not datagrid!
Code: Dim myconn As ADODB.Connection Dim MyRecSet As ADODB.Recordset myconn = New ADODB.Connection
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The SQL query contain several table, thus I used a "*" instead for the table name- not sure this is correct?
I have a DGV that is bound by an untyped Dataset. My select query consists of using 5 columns from 2 different tables. I fill a dataset with the results of the query. I assign the dataset to the DataSource of the DGV but don't assign the DataMember. The DGV doesn't populate, however, when I test the query it runs like it's supposed to
I use a Datagridview control, in which I need to display info and after that to export it to an excel document(but the export to excel part it's not important right now). I need to display in the Datagridview 2 fields:name and item, from a table(here 's where I thought I should use select) and also the value field which has to be calculated using a certain formula... Let's say value= a+b
How do I loop through a dataset and populate a DataGridView - heres my code. Hopefully someone can point out where Im going wrong... Not getting a specific error, just failed message box. when i take out the try/catch function then Im given no error but the DataGridView does not populate.
I have an application in which I have to populate a datagridview from one table from an access database. Here is the code that I use to open and close .mdb file.
Public sql As String
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... But I don't want to use this way... I want a different way with a dataset or... I don't know.
I have a DGV that is bound by an untyped Dataset. My select query consists of using 5 columns from 2 different tables. I fill a dataset with the results of the query. I assign the dataset to the DataSource of the DGV but don't assign the DataMember. The DGV doesn't populate, however, when I test the query it runs like it's supposed to.
How can i bind a comobox selection to a datagridview without writting code...
i Need to select an item from a combox and based on that item refresh the datagrdiview. I did something like that in Access but i don't know how to make it work in visual studio 2008.
once i select the datagridview itme that i want to edit i'd like to be able to update back to the database. I know i need to write code for this but at least i'll have the data refreshed on the datagridview.
I hope someone can guide me in the right direction. I'm using VB2008 and I have been writing some small apps just to get me started in programming (I'm pretty much a newbie) and all was going well until now. I recently was experimenting with an n-tier style application. My application is as follows:
1) SQL Server 2008 database
2) Data Access Layer
3) Business Logic Layer
4) WCF Service
5) Winforms Client
My Winforms client retrieves data from the database via a call to a WCF service. I want to make the UI more responsive and to prevent it from locking up when its pulling down data from the database and populating a datagridview. I have looked at the background worker component but I am unsure how to implement it properly. To currently populate the DGV I simply use the click event of a button, as follows.
I'm writing my first Vb application and have come to a grinding halt... I've created a windows form which has got a datagridview (which is populated by a tableadapter and a dataset generated from a SQL stored procedure) with two columns (Product and Qty), I'm populating the Product Column using a Stored Procedure, the user then adds the quantity. Once they've finished filling everything out they'll then hit a save button and I then need to insert both columns (along with a reference number which I'm getting from a text box) into a table on a sql server.
This is some of my code. But how do I populate a datagridview using the datareader.
Dim strSQL As String = "SELECT peopleid,firstnames,surname FROM people;" Dim cmd As New MySqlCommand(strSQL, con) 'cmd.Parameters.AddWithValue("Parameter1", strName) Dim reader As MySqlDataReader = cmd.ExecuteReader
I have a form that lists all of the clients in a DataGridView and when I click on a column that is a Link I want the data to populate into the form I use to capture. My problem is that when I click on the link all the TextBoxes on the form are filled correctly but my ComboBoxes are not.[code]
I have a DataGridView control that is bound to a dataset that I set up in design mode. This grid will contain addresses for a client. The relationship is 1 client to many addresses. So, when the user selects a client, I wish for this grid to populate with only the address records for that client. How do I set up in code a way for the grid to recognize this?