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Help with assigning value of previous row to new row added in DataGridView

Posted on 2016-10-03
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Last Modified: 2016-10-04
Hi,

When adding data in a new row in my DataGridView, I need to automatically assign the COUNTRY column, country value from the previous row or a value from a textbox. How do I achieve this using VB.NET?  Also , How save the record only if more than one column is populated in new row added?

Thanks,

Victor
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Question by:vcharles
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LVL 35

Expert Comment

by:Pawan Kumar
ID: 41827399
Sample example  !! Enjoy !!

Dim newCustomersRow As DataRow = DataSet1.Tables("Customers").NewRow()

newCustomersRow("CustomerID") = "Pawan1312"
newCustomersRow("COUNTRY") = "United States"

DataSet1.Tables("Customers").Rows.Add(newCustomersRow)

DataSet1.Tables(0)(ds.Tables(0).Rows.Count - 1)("COUNTRY") = "United States"
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Author Comment

by:vcharles
ID: 41827400
Hi,

Which method of thr Grid do I include the code?

Thanks,

Victor
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LVL 35

Expert Comment

by:Pawan Kumar
ID: 41827403
You can internally use datatable.

You must be using the datatable as a source to a GridView.  You have to use button click event

When you add a new row in GridView , add a row in the table just as mentioned above. After that change the previous row's country

after that again assign that datatable to the GridView
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LVL 35

Accepted Solution

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Pawan Kumar earned 2000 total points
ID: 41827407
May be something like below

Create a new button, on click on that event call below-

Protected Sub AddNewRecord(ByVal sender As Object, ByVal e As EventArgs )
     
	--Get datatable from session
	
	Dim newCustomersRow As DataRow = DataSet1.Tables("Customers").NewRow()

	newCustomersRow("CustomerID") = "Pawan1312"
	newCustomersRow("COUNTRY") = "United States"

	DataSet1.Tables("Customers").Rows.Add(newCustomersRow)

	DataSet1.Tables(0)(ds.Tables(0).Rows.Count - 1)("COUNTRY") = "United States"
	 
    gridView.datasource = DataSet1.Tables(0);
	
	BindData();            

End Sub

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LVL 35

Expert Comment

by:Pawan Kumar
ID: 41827491
Hi, Do you need more info on this?
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Author Comment

by:vcharles
ID: 41827750
Hi

Will test code this morning and get back to you..

Thanks,

Victor
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LVL 35

Expert Comment

by:Pawan Kumar
ID: 41827771
Here is a sample VB.Net project for you!



Enjoy !
Demo.zip
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Author Closing Comment

by:vcharles
ID: 41827786
Thank you.
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