In my DataGridView, I have several columns with check boxes that indicate whether the part has been bought or not. I want to add the summation of each column though to know how many of each parts have been bought by a single company. I have the count code working partially but I cannot get the correct number at all. Here is the code:
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tell me how I count the number of times a specifc value appears in a column within a DataGridView?
View 2 RepliesI have put datagridview on form. I have add one column and 7 rows. Beginning four row contain value "PASS" respectively and last three rows contain value "Fail" respectively. I have to count total fail values in a column in CellEndEdit Event.
View 2 RepliesHaving a little issue with my boolean statement. It is not changing the value to true after you click it. Its a basic function just not working correctly and Im pretty stumped on why. I mean its a simple yes or no concept. The button is on or off is the basic concept.
Private Sub btn_Backhoe_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_Backhoe.Click
Dim InUse As Boolean
'Switch On/Off[code].......
how to store boolean values in ms access or sql server
View 1 RepliesI have code like the following:
Dim Flag as Boolean
Flag = Function1ReturnValue
Flag = Function2ReturnValue
Flag = Function3ReturnValue
Now ideally 'Flag' should only have a true value if all three of the functions returned 'True', but as it stands now it won't do that. There needs to be an 'and' or an 'or' or an '&' or something like that, but I'm confused as to what needs to be.
I'm pretty new to MVC and the Entity Framework, but I'm sure this should be straight forward. I've got a class with a boolean "Active" flag. I then have a function that returns the results by date descending. All I want to do is ensure that only active records are returned. Should be simple, but it fails with the following error:
Error 13 Overload resolution failed because no accessible 'Where' can be called with these arguments: Extension method 'Public Function Where(predicate As System.Func(Of Review, Integer, Boolean)) As System.Collections.Generic.IEnumerable(Of Review)' defined in 'System.Linq.Enumerable': Value of type 'Boolean' cannot be converted to 'System.Func(Of PowellCasting.Models.Review, Integer, Boolean)'.
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I have a datagridview with rows and 2 columns the first for staffname the second for the price the first column name is "staff" the second is "price" I want code count's how many time the row have been repeated to count the item price
View 8 Replieshow do I count all non-new rows in a datagridview?
datagridview always give a blank row at the last row, and when i do a rows.count, it always adds up
is there a way to count only non new rows, or do i just need to subtract 1 every count (which is weird)
I have a datgridview with a checkbox that keeps giving me an error. I have checked the data type in SQL(2008) table and I have it set to CHAR(1), NULL = Y, Default value = ('N'). Image attached that shows the error.
The data loads into the grid except for the checkbox state (checked - not checked)Here is my bindings and add column section. Note: The grid will only display info. Text boxes and a checkbox above the grid will actually be the input source.
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I fill a DataGridView with the result of a database query. I have a boolean field named Gender. I want to show "Masc"if it value is True or "Fem" if it's False.
I can't assign a string value to a bool type cell. How can I do this?
PS: I've seen a C# example, but I can't understand how to do this in VB.
I have added an unbound checkbox column to my DGV. I have two questions on handling it:
1. How to have a checkbox on this Column header, which on checking must check all the rows in the DGV and vice versa?
2. How do i get the Boolean value of the checked rows in DGV on event handling? In other words, how do i know what rows are selected?
From what I read it is a good convention to name a method that returns a boolean value with the prefix of "is" or "has". So in keeping with this convention I am trying to name a method in my program with this prefix but I am running Specifically I have a class called Day. It is a simple class with a few data members and one method that returns a boolean value of true or false. The name of the boolean variable is isSpecialDay. This class has a method called isSpecialDay which takes the date of the day, applies some criteria to the date and then sets the variable isSpecialDay to true or false. My problem is that the boolean variable is named isSpecialDay and so it the method. What should I do?
Public Class Day
Private TheDate as String
Private DayName as String
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i have an array of booleans whose current boolean values I want to preserve but add additional length to the array? How can I achieve that? My code looks like this:
Dim Array() As Boolean
Dim ArrayInterimShort() As Boolean
ReDim Array(119)
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After Filling a DataTable in GridView's DataSource . A column with check box Type appears but it created as read only column and I can't enable it or make it editable... even i tried .readonly = false and still can't be edited
View 1 RepliesI bound datagridview to bindingsource. The bindingsource has its datasource a collection Called Rates which is a collection of Rate items. The rate object has a property called VALUE. I need the user to be able to edit different values for the collection; However, on the datagridview, i need to keep displaying on one column called OldValue the existing Rate value before the change while allowing the user to edit that value in a second column called NewValue.
In other terms, One colum OldValue will keep the existing values from the DB before being edited by the user, this column OldValue is readonly. Another column NewValue will display, the 1st time, the old value from the DB (similar to OldValue when we do the Fetch from the DB), but it`s editable column, so the user can modify each value in the column NewValue without overriding OldValue cells. For now, I bound both columns OldValue and NewValue to the same property VALUE of the Rate object,
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I ran some code through an automatic translator for C# to VB, and it translated some code like this:Public Property Title As [String]How is this different to Public Property Title As String
View 3 RepliesAm using vb.net 2008 and sql2008 and I want to loop thru frmMovement.DataGridView1 and the checked rows shd get populated into frmMovementReceivedFiles.DataGridView2. But I used Cbool, Boolean.TryParse to convert the the checked value but I still get but still the error: "Conversion from string "" to type 'Boolean' is not valid"
The code is as follows. Or ss there anyway to loop thru the checkboxes and populate them in another DatagridView2?
CODE:
am trying to calculate the values in rows in column 6 based on values of column 5. Bellow is the the code I am using I get a run time error about the string not formatted properly
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I am building VB.NET application that takes data from text files that are exported from a legacy DOS program. These are written to a datatable and displayed in a datagridview. Right now my code simply loops through the datagridview and inserts the data into the database (SQL Server). There is a requirement now that the client number must be checked before the insert to see if it exists in the database. If it does, then the value of one field (tax rate) is checked against the value of the field in the datagridview. If there is a difference, then the rate is to be updated in the database and the data that was in the database is to be written to a history table for audit purposes. If the client number is not there, then we are to do the insert (which is already written). I want to know what is the most elegant and efficient solution for this problem.
I need to compare what is in the database table with what is in the datagridview, update the history table for records that exist, and then insert new records.
I want to sum the values in the columns of the datagridview when I click the button in WinForms.
View 3 Repliesi would like to know the syntax for this.i wanna add the values of 2 cells and then i will display their total in textbox.i have been trying to use datagridview.rows.cells but i cant just use it to add to cells values.
View 2 Repliesi want to dynamically add the values in the column of a datagridview the row of which is also being created dynamically...
Form1.TextBox10.Text = total
con.Open()
cmd = New SqlClient.SqlCommand("select product,Quantity,MRP,Sale_Rate,Disc_Amt,Amt from sale_table ", con)
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I have DataGridView Named EditRecordDates with column called RecDateApp. Its the 3RD Column in DataGridView--I want to take Value from Textbox called AppDateTextBox and Populate all Rowa in Column with Value
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In my datagridview, I want to be able to change the value of comboBox1 depending on what the user selects in comboBox2 I had this working correctly, however if I move onto a new line in my gridview and select a different value in the second row it changes the previous row also.In the below code the correct values are generated in the combo boxs, however when I move onto a new line in my datagridview and choose a different value from my comboBox I get this error:
"The Following exception occurred in the DataGridView System.ArgumentException: DataGridViewComboBoxCell value is not valid To replace this default dialog please handle the DataError event."
Private Sub Expenses_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.TblCompanyTypeTableAdapter1.Fill(Me.Exp_testDataSet10.tblCompanyType)
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I have a DataGridView. When the user selects a single row from the grid and clicks a button a different form opens and displays the fields from the selected row in textBoxes.
1. How do I retrieve a row?
2. How do I send the row to the second form?
3. How do I make this happen with a click?
in the second form I want create an option to update the row therefore I want to be able to return the data from the second form to the first or to the table.
I have a datagridview with 12 columns and 30 rows I want to use as a scoreboard for a game (no need to input or save data). Columns are for the players and rows for the scores of each turn played. Say player1 has a score of 10 I type it in in his column in row1, the 10 should show up in a label as his total. His next turn his score is 100, type it in row2 and the label should show 110 as total. Hope I am clear enough, is there anyone able to give an idea on how to do this (in code if possible)?
View 3 Replieslike to be able to add up (and insert) all the values of a column in the datagridview but can't work out how to do it.I would like to insert a value into the ApplicantID column and read a value entered in the Grade column when a button is clicked
View 5 RepliesI have a DataGridView on a WinForm that has a column with a combo box in it. The combo is populated from a datasource and all works great. My problem is this: How do I get the value selected (or the text) in the combobox for a specific row when a button is pressed?
View 3 RepliesI have a items in my database named as
product number | product name | dosage | description | price | remaining box(es)
0023 amoxicillin 50mg none 50 50
i am having problem in my buy button. how can i manipulate the value in the remaining box(es). for example, i select the item named amoxicillin, and i entered 5 on my textbox. when i press the buy button the value in remaining box(es) will be 45.