I am creating one application visual basic and sqlce.I have two forms name Form1 and Form2.
I used Form1 to add data to database using OLeDb command and used Form2 to show data in datagridview by using dataset[code]....
Okay so I have a datagridview that is bound to a dataset. I have a column called type is a string char of either C, R, A, or V. The problem is that I want to sort the datagridview rows using that column and do so in the order I just gave so I want rows with C on top and then R and then A and then V. Because these aren't alphabetical, how could I sort the items this way? I did look into the icomparer, but really wasn't able to figure out how that works.
View 4 RepliesI have code on log in form but it only get the latest data on username and password column on my database
Here is my code
Public Class Users
Dim MyLogIn As New myRecords
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[CODE]...
This is my connection:
Imports MySql.Data
Imports MySql.Data.MySqlClient
Module myconnect
[CODE]...
This is my record:
Imports System
Imports System.Data
Imports MySql.Data
Imports MySql.Data.MySqlClient
[CODE]...
How to bound this dataset to datagridview?
[Code]...
I add a row to the DataSet using the following code:
Dim NewRow as DataRow
NewRow = gds.Tables("TitleDataSet").NewRow
NewRow("Title") = txtTitle.Text
NewRow("Local_number") = nubLocalnumber.Value
NewRow("Number_suffix") = txtNumberSuffix.Text
etc.
This code executes without errors but the bound DataGridView remains unchanged (without including the new row). Obviously I am doing something wrong or I am omitting a vital command. What do I need to do in order to make the new row appear in the DataGridView? I did not choose to bind the DataGridView directly to the database table because the database is selected by the user at execution time. Instead I bound the DataGridView to the DataSet. I included the command:L
dgvTitle.AllowUserToAddrows = True
but that did not have any effect.
Solved. Was missing the final command:L
gds.Tables("TitleDataSet").Rows.Add(NewRow)
Using Visual Basic 2010 Express on Windows 7 whilst learning to program a database application using windows forms. I created a database (.mdf I think) with a tables e.g. patient details. Then created a form and dragged dataset and database adapter follwed by dragging database fields - this all worked perfectly well. I then created a table "tblSuburbs" with key suburbID, suburb, postcode fields. This also went well when creating a form to add, modify or delete suburbs. I modified my Patient table to include a link to the Suburb table - creating a relationship and saving both tables. Here comes my problem - Whilst the Database Explorer shows the "_SuburbID" field I added to my patient table, it does not show up in the DataSet even after I try and "refresh" every "refresh" button I can find. I need the DataSet to show the link field as I need the User to select which Suburb they in.
View 4 RepliesVisual studio 2005 - vb.net..I have a user control on a form containing 15 combo boxes.All contain Y, N, and blank (for Yes, No, or blank) in the Items Collection property.Each of the combo boxes have a binding source to the same table, different fields.When you select a value Y, N, or blank for any of the fields and do a save, the values save while the application is open.Once you close and reopen, the values are gone.It appears the dataset does not recognize the change, so the values are not getting stored in the database table. Is there something I can do or put in one of the events that would identify this as a change.
View 3 RepliesI have written some functions that I have in a module. In one of the functions I would like to update a table that is in a dataset. I would like to do this with this function and not from a form class where the table could be bound. I need to call the function from various places in the application.
View 3 RepliesIf using a datagridview to update a database and the datagridview is bound to a bindingsource which has its datasource as the table to be updated: where dshould you place the tableadapter.update(mydatarow)
View 5 RepliesI have a dataset (WW1Dataset) with one data table(WW1).(database used in an access database) I'm trying to filter the dataset e.g a user wants to filter by a chosen surname (SurnameTextBox.text) so the datset is filtered to display only those records wherethe surname column in the dataset matches SurnameTextBox.text.
View 1 RepliesI am using VB Exopress 2008 and SQl Server Express 2008 in Windows Vista Home Premium. I have created a dataset after importing all tables and queries from MS Access to SQL Server. I have now added a view in SQL Server that I want to access and use in VB Express. However on clicking "Refresh" for the dataset the new view does not display in the available objects, only those I originally imported and opened with the original dataset. What, pleas am I doing wrong? How can I see this new View?
View 3 RepliesI'm calling a webservice using the async method, and catching the response with the completed event. When I first open the form, it all runs fine, however the second time I run the form I get the above error when attempting to sort the data.
Strangely, if I comment out the sorting code, it loads perfectly, and I can manually sort the dgv by clicking on the columns.
Code:Private WithEvents Tempws As ws.wsPrivate ID As Integer
Public Sub New(ByVal ID As Integer)
' This call is required by the Windows Form Designer. InitializeComponent()
[Code].....
I have a dgvAssetsSummary which holds data queried from the database, it hold's the AssetType column and Total column, it's grouped by AssetType, giving a summary of all the totals and what assettype they belong to.I'd like the Total column to be formatted so that there are no decimals and with commas, at present each total has four decimal places and no commas, this needs to be able to be read easily by clients. I've tried using the following code to format the column after I query the database, but to no avail.
dgvAssetsSummary.Columns("Total").DefaultCellStyle.Format = "#,#"
how to do this, I've had a bit of a look around but I can't find much. I'm currently looking at a couple of pages from the msdn library about it.
i have an datagridview bound to an access database, the table is empty so i want to use the datagridview to insert and update data to the database.so if i enter a complete row of data, i have an update button that looks like this
vb Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim tableAdapter As HEALTHDataSetTableAdapters = New HEALTHDataSetTableAdapters.HEALTHDATATableAdapter()
tableAdapter.Update(HEALTHDataSet)
End Sub
I am a programmer from Uruguay. I have read the other similar questions about my problem, but nobody has given the answer I need. I use VB .net 2005 and its datagridview. I bind it to a dataset which is populated with a table of MySql. And when I sort the numeric columns, it sorts them as string, not numbers. I have tried casting the data to integer in the sql statement, but it doesn`t work. I changed the format of the column of the datagridview to single or long but it didn't worked either. I really can't believe it is happening, it is a so common need! I thingk It should be totally automatic.
View 12 RepliesHow to update data in a table bound to a datagridview? Using Visual Basic 8.
View 1 RepliesI need to display an two-column editable grid not bound to a database. I took a look at ListView with Mode=Details, but it appears that only cells in the first column can be edited. I then took a look at DataGridView, and am having two issues:
1. When editing a cell, it adds a new row: [url] How can I prevent this?
2. I don't like the grey background and would like the grid to fill the whole space, right and below.
BTW, if you know of a good tutorial on using the DataGridView unbound, I'm interested. [Code]
I have two datagridview's both are databound. First one shows items for sale and the second stores all the items that were sold. I am trying too transfer selected rows from one to the other but no matter what I keep getting told "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound."
View 2 RepliesAnybody have tried having fixed number (painted) of rows on a datagridview regardless of the number of rows of the datasource??? i.e. datagridview will still show 20 rows even if the the datasource have 8 rows only? like gridlines already painted as is - with/without datasource binded.
View 12 Replieswith more control over changing values in a data bound DataGridView.On form load, all the data is pulled down from the attached database and fills the gridIf I want to change one of the values in the grid, I can put my mouse cursor in the cell, change the entry and save it back to the database.
View 10 RepliesI'd like to have an updateable DataGridView that's bound to a database-driven business object. It needs to handle all aspects of CRUD and be sortable and filterable as well.
Most of them simply bind to an object (non-database, manually filled) and do not allow you to Add, Delete, and Edit records. Furthermore, they basically never show how you would perform sorting and filtering.
I think the biggest things I'm not understanding are:
1) How do you make the DataGridView perform additions, deletions, and edits on an object.
2) How do you program your object to handle additions, deletions, and edits. Do you just need methods that use ADO.Net, NHibernate, or Linq to SQL (or any other CRUD handling mechanism)?
3) How to make this filterable and sortable.
Is this overly difficult to do or why am I have so much trouble finding examples for this?
I have searched the web and this site for an answer but have not been able to solve this problem.I am not able to place a flashing cursor in a specified cell of a data bound DataGridView on Form_Load.My test project consists of a single Visual Basic 2008 form with a database created in Microsoft SQL Express 2005 using the Add New Data Source in the Data Sources window.The database has one table consisting of 2 columns.Column 1 being the primary key with Identity Specification set to On.The second column is a VarChar50.The DataGridView was placed on the form by dragging it from the Data Sources window thereby creating the Binding Navigator and the Private_Sub Form_Load code.I have added the code that should put the cursor where I want it.[code]
View 2 Repliesi can't get the data to be shown in the datagridview what am i doing wrong here? i think the problem starts in the ---- if then statement
[Code].....
I have a DataGridView object to which I've bound a list of objects (of type Asset) returned from a database query.I'm programming in VB using Visual Studio 2005.I want to grab two copies of the bound object (calling them oldAsset and newAsset) from the selected row in the DataGridView, update newAsset based on input from other controls on the form, and pass both oldAsset and newAsset to a function that will update the appropriate record in the DB.I try to grab the two copies like this:
Dim currentRow As DataGridViewRow = Me.AssetDataGridView.CurrentRow
Dim newAsset As Asset
newAsset = currentRow.DataBoundItem
[code]....
Opening a watch window on oldAsset and newAsset indicates that the appropriate values are pulled at this point. But when I try to change a property of just newAsset, like
newAsset.CurrentLocationID = cboLocations.SelectedValue
I see that the corresponding value in oldAsset is also changed. This is not what I want, but it's obviously what I'm telling the computer to do.
I have looked around quite a bit, and nothing seems to answer my question in particular. I have DataGridView in which I add rows and columns dependent on a certain record count of geospatial data that is held in ArcGIS. The data is then passed through to the gridview for editing. So I do not use any databinding methods, rather it is a very manual process. I store data into a two-dimensional arrays, which indexes are based off of those certain data record counts. After the loops are complete, the data should be stored in each cell dependent on index. The very last row that was populated is populated perfectly, yet the other 72 (or so) rows are blank. Here is the code as follows:
[Code]...
Okay I have everything working as it should but when I first start up the data doesn't show up in the datagridview until I enter another record. It seems to be at the End Sub part of the button click Enter Record.This is what I have at form load event.
[Code]...
Is there a VB.net function that tells me the data type (e.g., DateTime, Integer, Varchar) of a bound textbox?
View 4 RepliesI am making a project in VB 2008 that has a Form (form1) that allows me to add new records to a database, and another Form (form2) that allows me to search for records in a database. I have done Form1 already, but my problem arrives in Form2 where I have to query the database. This form consists of 1 textbox (txt_search.text), 1 button (btn_search) and 1 datagridview (datagridview1). The name of my database is db_extras_test2003.mdb and the table I want to search records from is tbl_contacts.
I know +/- the SQL sintax to query the database (SELECT * FROM tablename WHERE columnname = (here i dont know if i put the variable name i have set for the txtbox, or the textbox itself)).I want this in a way that I (or other users) type in the textbox, hit the Search button and the results are shown in the datagridview (i can show the results in another way if it is better to do so).I have done the connection to the database already. The code I have so far is the following, but it doesnt work
[Code]...
I have a datagridview that is populated from an Oracle 11g DB. What I would like to do is add the values of a column together and display the results in a textbox. What would be the easiest way to do this?
View 2 RepliesI'm trying to resize any image fields in my data-bound DataGridView to 200x300; the column resizing code looks like this:
[Code]...