Iterating Through A Dataset And Obtain Values Of Each Column In A Row
Apr 1, 2009I would like to iterate through a dataset and obtain values of each column in a row
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ComboBox - Obtain Value From DataSet Based On Other Column Value
Jun 9, 2011I 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
Bind The Values In A Combobox To A Column In A Dataset?
Aug 21, 2011it's possibly to bind the values in a combobox to a column in a dataset? If so, how would I go about doing it? For example, If I have a column named 'Names' in a DataSet, each comboBox item would be a name from that column.(There will only me at maximum, 10 entries)
View 6 RepliesAdo.net Iterating Through Each Column In Row Of SqlDataReader
Mar 19, 2012I am writing a simple XML web service and want to return raw XML. I am doing this by creating a string literal that represents the XML. My data source is a SqlDataReader object that contains the results of a stored proc call. The way I am doing it right now is by using a while loop and reading values from the item property like so :
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Iterating Through Rows And Columns Of Excel Worksheet And Getting Values
Oct 18, 2011Is it possible to retrieve the value of a cell from the row and column index of an Excel.Worksheet? I need to itearate through all the rows and columns and get the values.[code]
View 1 RepliesObtain Width Of Listiew Column Autofit To Content?
Apr 25, 2011A ListView Column's with is set to -1 meaning its width is automatically set the width of the widest cell text in the column. I need the width automatcally set but I'd like to know the actual width of the column.
View 1 RepliesObtain A List Of Constants In A Class And Their Values?
Sep 21, 2009I have a class in VB with some constants that represent the string name of my security roles. I need to be able to call a function to return to me a string array(or collection, or whatever) of the values of each of these constants. I will be using it to make sure that my databases Roles table has the same roles as coded into the application.
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I'm looking to run a function, i.e. ClassConstantsToStringArray(gettype(Roles)) that will return to me "Administrator","Basic User","Power User" I'm know reflection is the way to go, I just don't know enough about using it yet to get what I want. I found a function on the net that would return to me the constant names in a FieldInfo array but still don't have enough smarts to make that work for me.
Interface And Graphics :: How To Obtain Rgb Values For Each Pixel And Converting Them To HSL Value
Nov 1, 2009I am developing a software that would scan the image in a picturebox and obtain the rgb values of each pixel in the image and convert each rgb values to HSL values. I am using vb 2008 express edition. I am still a student. All I have done is to obtain the image in a file and paste it in the picturebox. Below is my code. I dont really know how to start with the process of obtaining the rgb values of each pixel and converting them to HSL values and averaging the HSL value.[code..]
View 1 RepliesCalculate A Column Values Based On Other Column Values In Datagridview?
Jun 3, 2011am 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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VS 2010 : Select A Column From A Dataset Based On The Value In Another Column?
Nov 15, 2010I'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
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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"
Obtain Index From Array Where An Input Value Lies Within A Range Of Values In The Array?
Dec 12, 2010Per this UserControl that can be added to a blank form, I would like to use the HorizUnits array below to map custom grid x coordinate from a mouse x position.For a given input value 13, what syntax would I use to obtain a value of 2 where 13 lies between Value 10 and 16 for which 2 (Name) would be the custom grid's displayed coordinate position?
View 1 RepliesAdding A Column And Values To It On The Basis Of Some Existing Colum Values?
Jan 4, 2011i have retrived this datatable from datasource and i want to add a more colum 'category'basedon the each value of each Role, like if role column has the value '90 daya client' then in the same row it should have a value 'DC' in the category column.n make a temporatry dt1 table but to add related values.
S.No First Name Last Name Role Date
1 Us er1Name User1Name 90 Day Client 11/01/2011
2 User1NameAtt1 User1NameAtt1 90 Day Client 11/01/2011
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Adding Column Values Of A Certain Column
May 28, 2010I want to add all the values of a certain column. I already get the value of an exact cell value but when i add the loop code for it to continue,it doesn't performs well.
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I,m using vb6 po with datagrid component.
Get Value Of Last Record In A Dataset Column?
Jan 20, 2010I 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.
View 1 RepliesHow To Count Column In Dataset
Mar 23, 2012my 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?
View 15 RepliesRetrieve Column From Dataset?
Sep 15, 2010I 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]...
Datagridview - Dataset Display Different Column?
Apr 5, 2010I am making a combobox from my data source. Basically, This is a projects form and the user needs to select the the primary contact which is contrained by the customer id (GETbyCustomerID) set in another field. I have it working... mostly except the combobox only displays the contact ID which is completely useless to the user. I need to know how to display the First and Last name (both are seperate columns in the table).
View 1 RepliesDataset With Wizard Could Not Get Column Information
Jun 5, 2011i tried creating a dataset using the myodbc driver 5.1 (which im sure is correctly typed in because that is the exact same connection string i used for data manipulation within my app.now, im stuck. i cannot generate any reports because the dataset i created can not return any field information w/c is confusing because it displays the names of the tables from the database. is there any way i can import all the data i need to my reports programatically??
View 3 RepliesEntering Data Into A Column Of A Dataset?
Jan 6, 2010I want to insert/edit date automatically in the DateCreated column and the SystemUser column to track the date and user who entered ther details into a dataset. I am using data bindingsource to bind controls to the dataset
View 3 RepliesGet Current Column Data In Dataset?
Aug 7, 2010I am a beginner to VB.net. Still learning and have a lot to learn.I am confuse on dataset and binding source.I want to update the columns in the current dataset.
I have a listbox to reorder the sequence.Once those are reordered, the sequence number should be wrote back to the "Sequence" column in the dataset.
After pointing to the current row in the binding source, I don't know how to write back to the column.[code]...
VS 2010 Max Number In Dataset Column
Jun 17, 2011I'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?
Collect Before And After Values From A Dataset?
Sep 12, 2011I have a multi-user app which consists of a Windows form (VS2008), and a SQL Express 2008 database. I'm already detecting if the dataset has changed before the user closes the form so I can prompt them to save their changes. What I'd like to do is to capture the changes they've made, and write them to a database table so that users can track all changes made to each record on the DB.What is the best way to grab hold of the data changes before they're written back to the DB and also grab the original records?
View 1 RepliesFill Values From Dataset?
Feb 9, 2012I have a need to assign values from my dataset to a variable but when i use string (which its normally text) and the item in that row of the dataset is empty it tells me that conversion from DBnull to string is not valid
View 2 RepliesShort Ref For Dataset Values?
Feb 23, 2011I have a dataset and I am referencing items in it like this:MainForm.DataSet1.Tables("JobsTable").Rows(1).Item("JobName")
View 5 RepliesCan't Get Column With Format Date In Dataset To Database
Mar 28, 2012I've googled but can't find a awnser to a problem. I've made a vb.net application in VS2008 with a dataset in it. I want to store a column with format date in the sqlite database.[code]...
View 1 RepliesChange Column Width In A Combobox Associated With A Dataset In Net?
Sep 30, 2011I have a ComboBox with its datasource being a dataset from a SQL Server database.
The width of its columns are relative to the width of the name of the columns. I would like to increase that width in order to see the content properly and not cuted.[code]...
Determine A Dataset Column Data Type?
Mar 17, 2010I have a dataset and want to know the data type of a specific column. The GetType returns datacolumn not string or integer etc.iggy!
View 2 RepliesFill A Checkboxlist From Another Column In A Dataset In Program10?
Sep 3, 2011Just trying to work out how to build the list from a seperate column in a linked datset to a checkboxlist, the same way as you can with a combobox?
So you can take the dropdown list for the combobox from another column and I thought it would be the same for the checklistbox but it does not seem to be an option.
Format Decimal Column Into Currency In Dataset?
Mar 14, 2009I want to apply culture setting for a dataset column. I use Icelandic regional settings where the currency format is as such :
View 1 RepliesGet From The Datagrid Or The Dataset The Data Of One Column In One Variable?
Oct 4, 2009I have a table with two columns (id and number1). How can i get from the datagrid or the dataset the data of one column (number1) in one variable?
View 7 Replies