VS 2010 : Select A Column From A Dataset Based On The Value In Another Column?
Nov 15, 2010
I'm writing a help application for the Customer support team at my company to help agents ask better questions when customers report problems. In it, I've got a SQL database that contains all the products, topics, and questions. The layout is similar to the following:
Products Table:
Product_ID Product Name:
Topics Table:
Topic_ID Product_ID Topic
[code]....
I don't know if I'm making myself clear, but I basically need to do the equivalent to the following SQL statement: "SELECT PRODUCT_ID FROM Products WHERE PRODUCT_Name = LstProducts.SelectedValue"
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Jun 9, 2011
I have a combobox which is populated from a dataset (pulling values from the column Actuator_ID). When an item is selected from the combobox, I need to return another value from the dataset (column Gateway_Channel). In the 'selectedindexchanged' sub, I have the following line which should return the value from the second field (gateway_channel) but whatever item is selected in the combobox, only the value from the first row is returned.
errBox.AppendText((ds.Tables("Actuators").Rows("Actuator_ID" = ComboBox3.SelectedItem.substring(0, 2)).Item("Gateway_Channel")).ToString
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Jul 27, 2011
I'm writing an app for someone where I am pulling in work orders table information. The information includes: worknum, fname, lname, customername, description, etc. I do not plan to update the data in this table, only to read from it.I'd like to display a combo box for the work order numbers. The user would start typing the information for the work order in and it would autocomplete based on what's in the list. As work orders are displayed in the combo box, I want to update the data in text boxes representing the various fields.
I'm thinking rather than query the database several times, it would be a good idea to create a DataSet with information for the work orders table within the last x months then query the data from that dataset. I know there is a DataSet.Select method, but it looks like it returns the entire row. Is it possible to retrieve just a column of distinct values? For example, I'd like to do a select statement similar to this:
SELECT worknum FROM {WorkOrderDataSet} WHERE date >'{today-x}
The first part in curly brackets is meant to represent the work order dataset I create when first importing the data from Access. The second part in curly brackets will be replaced with variable data to represent a date to reference. I also don't think I'll need distinct because the workorder is unique (edit: is a primary key)Is it possible to retrieve just a column of distinct values from a DataSet with multiple columns? How do I do this?
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Mar 13, 2009
table named mytablei have columns like this
[Code]...
i would like is to include amount1 and amount 2 values into sum only if amount1paidstatus="yes" for amount1 and amount2paidstatus="yes" for amount2, something like for selected day and selected customer.query "should" look something like this:select amount1(if amount1paidstatus=1)+amount2(if amount2paidstatus="yes")from my tablewhere (day=1) and (customer=1)
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Dec 13, 2010
I have a data gridview on my windows form with 4 columns. Now I identify a column as followed:
Dim item1 as String = DataGridView1.Item(1, index).Value
So now I use a number ( In this case: 1 ) for the column index, but I want to make it a bit more readable so now I want to obtain the column index based on the datagridview column name.[code]...
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Jun 16, 2011
I am going to make a invoices then.. they are going to have a id it is not going to be identity, it is not my idea, this is the idea's my professor's. then he want it so..he didn't want i change id to int, he want it was varchar..but now i have seen this is as identity.. id =1, next id=2, next=id=3.. but it doesn't mind he told me in the future it is going to be so..
abc000002
abc000003
abc000004
[code]....
then for that he doesn't want i change it to int how can i get the last? i want it one plus next i want it was
abc000010
how can i do it? i am working on visual basic and visual studio 2008i can use a loop-for, or a query for solve it?
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Jun 17, 2011
I'm making my own ID field (highest number + 1) and using it when I insert a row into my tableadapter, and I've tried two ways...
Ordering my dataset by ID descending and picking the first row does nothing for me.
I've tried building a datatable and ordering it descending and choosing the first row. This works great until you get to 10... Then it counts 1, 10, 2, 3, 4...
How can I make a textbox, label, etc be the next ascending number in my column Highest Number + 1?
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May 23, 2012
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")
[code]....
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Jun 3, 2011
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
[Code]...
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Apr 9, 2011
I want to move the cursor from column 1 to column 4 but what happened instead the cursor moves to column 5, this happens when I use the enter key event. but run well if I double click. The following description of the program: there are 7 columns of code, item description, unit, price, qty, discount, item amount code when key enter press :
[Code]...
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Apr 9, 2010
How to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
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Aug 2, 2011
Unable to select multiple column in datatable
Code:
Dim Activitydtb As DataTable = DirectCast(ViewState("TalentcharacterActivty"), DataTable)
grdviewactivity.DataSource = Activitydtb.Select("SELECT
[Code].....
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Jul 25, 2011
I have a Dataset with a Bunch of Columns used in a Report (DevExpress XtraReports) (DataSet being the DataSource). The Dataset has many columns, and i need to read a column (based on the row type), and decide which column value to read for the row, and apply formatting based on the row type.
[Code]...
Is there a suggested way to handle this in the Report or at DataSet Level (excepting the formatting part)?
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Jan 19, 2011
I have an sqldatasource that loads, data from my server and puts it in a datagrid.
I have a Column named clnumber that has, the numbers 1,2,3
What I want is that each row have a different color depending on which number is in that datarow column
THIS IS THE CODE I USED
[Code]...
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Nov 19, 2003
I want to Highlighting a Datagrid Row based on a column value.I've refreshed my DataGrid and now I want to go to the row that contains a specific value.ie, 2 Columns NAME, ID 1000 rows.I want to highlight the Row with ID = 700.[code]
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Aug 29, 2011
Attempting to set a color on a data row in my DGV if the value is True. As of now it changes all rows.
[Code]...
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Nov 9, 2010
I am querying a MS Access 2007 database to get a recordset in this manner
SELECT LastService Is Not Null AS [Svc], WeekEnding, CarName
FROM tblService;
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Feb 16, 2009
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.
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Aug 22, 2009
I have text file whic look like this[code]...
I want to swape the lines based on second and third column.. I must first swape based on second column in decending order wher the big number will come first. Like here the lines with number 30 will come first followed by 28 and so on. Then i must swape the colors. Like all the Black will come first follow by[code]...
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Oct 5, 2009
I have lines like this
1.0 30 Blue (2 15.50 27.0) [2 15.48 24.1] 96111 19775 100493 19608
1.0 30 Blue (2 16.00 25.0) [2 15.26 23.7] 99111 23275 101123 18112
1.0 30 Blue (2 15.12 22.0) [2 14.97 17.9] 103611 17087 109706 16065
1.0 30 Blue (2 15.50 21.0) [2 15.15 21.4] 105111 19775 104509 17325
1.0 30 Blue (2 15.00 23.0) [2 15.23 17.9] 102111 16275 109706 17876
I want to sort the column that i higlighted in accending order.This is my code so far:
Dim FileContents() As String = IO.File.ReadAllLines(wirebot50)
For Y As Integer = 0 To FileContents.GetUpperBound(0)
If Not FileContents(Y).Trim = "" Then
[code]....
But this does not sorting anything. What is the wrong in the above code. And if i want to sort in decending order how to modify the code?
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Jan 12, 2010
I have a DGV which is part of an inventory system. I have several columns but the ones i need to resolve are Quantity, Name and Plural Name. essentially if quantity is 1 i need to display the Name data if greater than one the plural data. Is this possible? would i need to resolve this earlier in the process (the data is extracted from an xml file using LINQ to bind it to a rowObject) or can i do this with the completed dataset, say by hiding the Name and Plural Name colums and creating a custom column? ideally i would like to keep the data untouched.
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May 30, 2011
I have a datagridview with several columns, but what I�m trying to do is sum km2 column based on date. I�m using the following
Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.CadastroSeqTableAdapter.Fill(Me.Db01DataSet.CadastroSeq)
[Code]....
The query is grouping by DATE (data), this OK, but the km2_FF values not, is not showing anything. To be more clearer, this datagridview has different values of km2_FF for the same date, I want to display the total of km2_FF for each day.
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Jan 20, 2010
I have a dataset column which is "newsID".I want to get the value of it's last record so that I can use it as a default value or starting point to auto increment when I add a new record using the BindingNavigator.
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Mar 23, 2012
my application read excel file into dataset.The excel file is actually look like a report. the total column for each row is different. how to count total column for a particular row?
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Sep 15, 2010
I have a Customerdataset as follows[code]...
I want to sort it out on Route sequence and put it in the Listbox in order.may represents other numbers.So in the list box..[code]...
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Apr 10, 2012
In WPF, I have a Uniform Grid and would like to be able to find the row and column based on the index of a child element.
I know there is a mathematical way of doing this and would rather not use a normal Grid.
If it helps, I can get the total number of rows and columns by using:
Math.Sqrt([*uniformgrid*].Children.Count)
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Nov 22, 2011
I have a value in one of my gridview column which will determine if the entire row's value should be in red color. I did the below but somehow every single row is red colored.
Protected Sub uigvList_RowCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles uigvList.RowCreated
If e.Row.RowType = DataControlRowType.DataRow Then
[Code]....
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Mar 28, 2012
Is there a way to auto-update a listview based on reading a column?
Requirements:
1) The code must make a call to a user-created "Private Sub" to recalculate
2) Update must be automatic. .SelectedItem or clicking a row will not work
3) The formula function cannot be included in Form_Load
I've got everything working if the user selects a row, then clicks an "update" button using .SelectedItem. But with my current program containing 200 rows, it's not feasible. Simply put, how would I go about updating a listview column (0 in this case) based off a call to a formula, then updating the row?
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Oct 5, 2009
I have a datagrid adding items for selling. The total for each row is calculated on the price, qty and discount. This goes into rowTotal column. Below the grid, there are 2 textboxes, one for txtBoxVAT and txtBoxSumTotal. Now I want to add the column 'rowTotal' into txtBoxSumTotal. How to achieve this.kesk
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Aug 22, 2010
im trying to show values in row/column based on the selected time
Public
Sub Btnplanner_Click(ByVal
sender As System.Object,
[code].....
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