Home Categories. Form Design. You will need to import the following namespace. Imports System.
Populating the DataGridView. Add 1, "John Hammond""United States".
how to get the first Cell value of the data table in c#
Add 2, "Mudassar Khan""India". Add 3, "Suzanne Mathews""France". Add 4, "Robert Schidner""Russia". Objecte As System. EventArgs Handles MyBase. Dim dt As New DataTable. Add 1, "John Hammond""United States". Add 2, "Mudassar Khan""India". Add 3, "Suzanne Mathews""France". Add 4, "Robert Schidner""Russia".
End Sub. ToString. Rows e. Cells 0. Cells 1. Cells 2. End If. Related Articles. Add Comments. Thank you for the feedback. The comment is now awaiting moderation. You will be notified via email when the author replies to your comment. You can add your comment about this article using the form below. Make sure you provide a valid email address else you won't be notified when the author replies to your comment Please note that all comments are moderated and will be deleted if they are Not relavant to the article Spam Advertising campaigns or links to other sites Abusive content.
Please do not post code, scripts or snippets.Need support for your remote team? Check out our new promo! IT issues often require a personalized solution. Why EE? Get Access. Log In. Web Dev. NET App Servers. We help IT Professionals succeed at work. Get value of cell in datatable VB. Medium Priority. Last Modified: I want to get the value of a datatable row, first row, column called option1.
I dont know how to get it The line where i have dt. SelectedValu e. Tables 0. Rows 0. Start Free Trial. View Solution Only.Columns: These are named with a string argument and a Type argument. They have different types. GetTable: In a DataTable, each column allows a specific type of data. The GetTable method adds 5 rows to the DataTable. Tip: The arguments to the Rows.
Add method are of the types specified in the columns. Add "Dosage"GetType Integer table. Add "Drug"GetType String table. Add "Patient"GetType String table.
Get Data from a Selected row the cell
Add 25, "Indocin""David"DateTime. Now table. Add 50, "Enebrel""Sam"DateTime. Add 10, "Hydralazine""Christoff"DateTime. Add 21, "Combivent""Janet"DateTime. Add"Dilantin""Melanie"DateTime. Please paste in the GetTable method to run this program. In the For-Each loop, we loop over each Row. With Fieldwe print the first Integer cell in each row. Generic method: Field, part of DataRow, is a generic method.
So we must specify the Of Integer part to indicate its parametric type. Rows ' Write value of first Integer. WriteLine row.
Suppose we have 2 DataTables and we wish to compare the rows in each. We can use a nested For-Each loop. And then we call SequenceEqual. It tells us whether 2 arrays are the same.
Data is often stored in tables. And these tables often reside in databases.
In the. Type details. Used often in VB. NET programs, DataTable has columns and rows properties. It is an in-memory representation of structured data like data read from a database.Need to download code?
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NET 1. User Name Remember Me? Password Reminder Password Register. December 12th,PM. Ron Howerton. Points: 2, Level: I want to obtain the value entered into a datagrid cell in a VB. Item grdServices. ToString What do I need to do to get the new value entered by the user? Is there another method I should use or what? December 15th,PM. It's necessary instead to reference the underlying table in the dataset even though the table has NOT actually been updated - it makes no sense to me, but then very little MS has done with.
NET makes sense to me using the ColumnChanging event. SetColumnError e. Tables "TableName". ColumnChanging, AddressOf ColumnChangingValidation Then when the user enters a value into the indicated column and tabs out or clicks on another cell or another control, the event fires and the error indicator appears on the grid row and column. I haven't figured out hwo to cancel the update to the field in the table yet, but it should only take me another week or so to figure out that minor detail.
December 23rd,AM. Here's the answer for cancelling the update. Item e. Ordinal End Sub good luck. Thread Tools. BB code is On. Smilies are On. Trackbacks are Off. Pingbacks are On.Use the ItemArray property. A DataRow contains an individual row of data. It narrows the data abstraction to the level of the row. The DataRow type provides ways to add, remove, or read cells from the enclosing data structure. As we begin, please notice that the examples that follow invoke a function called GetTable.
This function returns a fully formed DataTable instance. It has four columns and five rows, for a total of 20 cells. DataTable Tip: You can paste this function into the following examples to achieve compilation. Add columns. Add "Weight", GetType Integer table. Add "Name", GetType String table. Add "Breed", GetType String table. Add rows. Now table. Add"Fido", "Bullmastiff", DateTime. We see a simple way to construct a DataRow instance using an Object array. When you create the Object array, please set it up so that the elements are arranged to match the ordering of the DataRow template itself.
Next: Invoke the Add method upon the Rows collection to turn the Object array into part of the enclosing DataTable structure. Add v End Sub End Module. It is useful to acquire references to individual DataRow instances from the DataTable based on indexes.
Code Review Stack Exchange is a question and answer site for peer programmer code reviews. It only takes a minute to sign up. I find using names as theData bad practice. It doesn't give any info on the instance. Give it a useful name you, and others, easily understand. Don't use P ascal C ase for local fields, use c amel C ase instead. Your MyModel will become myModel.
You had already done this correctly for dataSetRow. Finally, the important part! I created following extension method to get the PropertyInfo of your instance note that it doesn't have to be placed in an extension method, I only think it looks cleaner and is good for reusability elsewhere if needed :. As RobH stated in the comments, you can use LinQ to avoid nested if statements. Here's how your code would look like:. If you can refactor your model class so that the column names and values are in a dictionary instead of separate properties everything an be simplified to one LINQ statement:.
Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Getting column values from a datatable Ask Question. Asked 5 years, 2 months ago. Active 5 years, 2 months ago. Viewed 51k times. Rows; if theData. Simsons Simsons 1 1 gold badge 7 7 silver badges 16 16 bronze badges.
Column3 would not be replacable by MyModel["Column3"] or something similar as it is a property of a class. Column1' to 'MyModel. Column4' which you stored in an array. Active Oldest Votes. Casing of property names: Don't use P ascal C ase for local fields, use c amel C ase instead. Redundant parentheses: Following: if!
Value can be replaced by: if! Value There's no need to encapsulate the whole expression again in parantheses. Simplifying the code: Finally, the important part! GetProperty columName ; columnProperty.
SetValue myModel, Convert. GetProperty existingColumn ; columnProperty. Abbas Abbas 5, 18 18 silver badges 39 39 bronze badges. You could convert most of that foreach to LINQ though, might look a bit nicer than the nested ifs. Columns where MyModel. ContainsKey c.I like to call the cell by the name, because later i need a hidden value which is not shown in the table - the id.
The comment nots that this method cell. The legacy fnGetData method is not which I would suggest ignoring since it is a legacy method. Adding console. Now i see the structure, when i click on the 'object' in my browser console. Does it work if you console. It might be that alert has been disabled for your page. Looking at the console trace you gave I can't see any reason why that data access wouldn't work DataTables designed and created by SpryMedia Ltd.
Thanks a lot, Thomas. This question has an accepted answers - jump to answer. November Hello Allan, sorry but I do not find any answers for my question in the documentation. Now I take your code - It is working. I get the index of the row. I like only the surname - i tried it with alert data[idx. Simply: data. November edited November Hello Allan, and here i have a small problem maybe. If i will rename the column - how is the right way? In which case you should be able to simply use data.
Hello Allan, thanky for your reply. I have done it. Thx for your help. Hello Allan, what do you mean with console. I tried it now in chrome and mozilla it doesn't work. Thx a lot, Thomas. Hello Allan, find the Mistake.
It was a litte Bastart-Mistake Howdy, Stranger! It looks like you're new here.