Hi _Kalesh_,
Base on my understanding, you want to bind dcInvoiceNumber in dtPurchaseInvoice with txtInvoiceNumber. You can do it in the VS designer.
1. Click the "+" sign in front of "(DataBindings)" property.
2. Set the Text property with the data field in the listed DataSource/BindingSource.
If you have any question, please feel free to tell me.
Sincerely,
Kira Qian
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