ctually i make a 4 column in datagridview now i want the four columns of table come in same columns in datagridview but when i show data in gridview it add more 4 columns and show data in those 4 column
View 4 Repliesi'm trying to make a login form connected to an sql server database. my data base has records like this:
fname - lname - minit
each name in a separate column, and i wanted to use the name as the login username, so in the dataset designer i made a new column and concatenated the names together like this: lname+fname+minit but at Dim dr As SqlDataReader = cmd.ExecuteReader i get this error:
"Invalid column name 'username'. Invalid column name 'username'."
i'm asuming that's because username doesn't actually exists in the database, only in the dataset.is there a way to get that to work with out the username column actually existing in the database?
Imports System.Data.SqlClient
Public Class LoginForm
Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click
[code]....
I would like to know how I can show and hide data based off of a value in a column.
Example. My table has 3 columns Name, Password, and Tel#
:Pseudo Code
if Name or Column(0).Row(0) = "Shawn" then
. Column(1).Row(0).Forecolor = System.Highlight
. Column(2).Row(0).Forecolor = System.Highlight
[Code].....
I placed my code in the rowprepaint event of the datagridview and on start up I get the results I am looking for. However, if the user selects the row or a cell in the row then the value will display.
I don't want the value to show even if the row is selected.
when closing the form, checkchanges() is run in order to check if there is data changes..in checkchanges(), i compare data in database and form..if data in form is not same as in database, it consider data has been changed..thus, if there is changes, user will be promt to save data before close..the problem is, when my form is closing, the checkchanges() always show no changes, even when i made changes..this is because, when data is compared (between database and form), the form is already commit changes in database..that is why , when data is compared, it is actually compare the same value...
For example:
*when form load*
database: employee number = 1009
textbox: employee number = 1009
[CODE]...
That is why checkchanges() always show no changes.because it commit changes to database before it made comparison..what should i do to prevent from commit changes when form is closing?
I have made a Database.mdf that contains a table that Includes 3 diffrent Column Names.
1:"ID" This one i set to an primary key and i have also made it automaticlly put a number in order to the list. Like 1,2,3,4,5 for each data added. Data Type for this is int.
2:"WordCombination" Were i enter my word combination that i want it to look for)
3."TypeofCombination" Were i enter what the program should add to what i typed in texbox1 if it contains the WordCombination.
I want my program to se if texbox1 contains any of those WordCombinations in my database. And if thats true, Then i want it to show whats in the TypeofCombination + the text in texbox1 in texbox2. If i enter "What do you want ?" in Textbox1 i want the program to find that "What do you want ?" contains "you want" like in ID:1 WordCombination:you want. So becuse this is ture it should enter TypeofCombination in this case "Question:" + what i entered in Textbox1 to show in Textbox2.So if i write "What do you want ?" and click start. Textbox2 should show "Question: What do you want ?" If i Write "My name is Jake" and click start. Textbox2 should show "Answer: My name is Jake".If I Write "hello you Hi there Jacob" and click start. Textbox2 should show "Greeting: hello you Hi there Jacob".And i Should be able to add and delete Word Combinations Without having to change the program.
Add persistence to multible DataGridView in terms of Hide/Show column and column width
View 1 RepliesI have an access form that shows a data table. when the form is opened, I want to filter the data in the date column to show only the records that don't have a date entered into the field.
View 8 RepliesDim Comp = From C In db.Table1 _
Select C.Completed, C.Taken, C.Namne
Datagridview1.DataSource = Comp
Am using the Entity Framework and Columns Completed and Taken are of bit Datatype. When the query results are displayed in the datagridview, these bit columns are returned as of ColumnType Textbox - so i get a Datagridview textbox column with true or false string values.
I want to display Completed and Taken as Checkbox columns (either ticked for True or un-ticked for false) but ofcourse i can't do this in EditColumn dialogue because the Datagridview is unbound.
how can i change this in code at runtime
How to pass data between forms made at runtime? I need to check the data in the form at runtime and accordingly use it in SQL queries to retrieve data from database.
View 2 RepliesI am trying to make a GUI that can input data into an exe that is already made.
View 1 RepliesHow do you refresh a datagridview in code to show to show new data in the DB?
View 3 RepliesIs it possible to save into temp data a user made class? I have a class with many structures and each structure contains variables and im trying to add to my program a way to save the data of that class object with its structures and everything is that possible? I tried manually making some sort of save but its taking too long and proving way too hard for me. Is there a way to just convert it into some general object format and save the object? Is that possible can you just save undefined objects without having to create a format manually for that object?
View 6 RepliesIn a repeater is it possible to have a field only show once and then again if it changes?What I want it to look like
Audio
- Thing
- Thing
- Thing
[code]....
They are going to be ordered by Type either audio video picture but I don't want to have repeat Audio Video Picture as well.
This is my programs complete code, the only problem is i want to fix the amount of decimal places that show up in my gridview. The problem is if i do this on the asp side the location of the column gets thrown off and the column is duplicated. I figured if i just remade the table on the asp side it would work only problem is if i remove the sql for that particular column the asp side column cannot get data.
Imports System.Data.Sql
Imports System.Data.SqlClient
Imports System.Data
[Code]....
Here is the code:
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<script runat="server">
[Code]...
Is there a way not to show the very first blank column of the datagrid?
View 4 RepliesI am using a databound datagridview control. I created a custom query to fill the grid with which includes joins and using alias names in the sql query for the joined fields. Here is the query I am using:
SELECT Events.[Date], Events.[Time], Contacts.LastName AS Lastname, Contacts.FirstName AS Firstname
FROM (Events INNER JOIN
Contacts ON Events.ContactID = Contacts.ContactID)
The datagrid views fine using the columns that are in the events table. I want to be able to view the aliased columns from the contacts table in the datagridview as well.
How can I display the joined columns in the datagridview? Maybe there is a better way to do this? Maybe this is not enough information for a resolution.
is there a way to show in datagrid only those row that has column that is empty, im using this code
Me.DataGridView1.DataSource = ds.Tables("0").Copy() but it shows all the data from my table.
I had a DataGridView that was bound to a Table in my typed DataSet. I recentyl added a new column to the table in the database and updated the table in the DataSet accordingly.Now, when I go to the DataGridView to update it, the new column does not appear under the "Databound column" list. I tried setting the data source to "None", then reselecting it. Still, it does not show the new column. I then deleted the DataGridView and re-added it to the form. Again, same result. However, when I select the data source, then click "Preview Data", it show the added column.
View 2 RepliesI've using binding source filter to filter the data i see in the datagrid based on the value of the cell (this is in relation to the checkstate of a checkbox column), so far so good
InvBindingSource.Filter = "Saved = '1'"
what if i wanted to filter and only show the rows with null in that column?
I had a datagridview which connect to oracle database. I want to filter one of the column of the datagridview.
Then the filter value will show it in the combobox.
Any suggestion to filter it and show at combobox?
how can i show all column names of a table in List view.Like table name is "WO"
Wo_no
T_Date
Emp_id
The first column in my Data Grid is actually not my first column. It has an arrow pointed to the first row and then the last row has an asterisk by it. Is there anyway to make this column not show every time my form loads?
View 1 Repliesim trying to show values in row/column based on the selected time
Public
Sub Btnplanner_Click(ByVal
sender As System.Object,
[code].....
I have a datagrid on my form, it is set to loads CSV
Can someone tell me how I can show the values of a particular column (showing no duplicates) in a combobox?
I'm filling a DGV by setting it's datasource property to a datatable, but for a DateTime columns it doesn't show seconds.
View 4 Repliesi have a column item-code, inside my database which i have bound to a datagrid view. The item-code comes in this format "A-B-C", i wish only to show the "B" part of the code, i have bound this column to the gridview and now wish to make it show the substring. I tried defaultcellstyle.format but don't know how to get a substring for it.
View 2 RepliesI searched for this topic and all the examples are in C# (and they have errors as they will not convert with a C# to VB converter). I am using VB.net 2005 and would like a sample that work for it. I have a loop that goes thru the DataGridView and changes the row color based on a column/cell value from the binded DataTable (shown below). I'd like to add to the loop (where the comment is) and also hide the button for this cell and let the "In Process" show in the cell instead.
Private Sub ColorInProcessItems()
' Color the rows green if they are In Process, red if they are Complete
For Each row As DataGridViewRow In dgvQueue.Rows
[code]....
I have some data in DB, which i am getting using a WebService in a List(Of String) and returning that List using following [Code] Now i have a VB.net program in which i m utilizing the web service and getting the values using the [Code] Values are fine but they are in a single String() and i want to show the values of each column in a different TextField(Multiline), how can i do that?
View 1 Repliescoding multi column combobox in a DataGridView cell. When I click the combobox cell from datagridview, It shows the multiple column such as Name, address and telephone. When I choose the item, it will return the value.
View 12 Replies