Prevent Duplicate Data Entry Via Userform Based On Exact Match In 2 Columns

Jul 16, 2012

I have a userform with several textboxes and 2 comboboxes. The data that I need protected from duplication is based in the comboboxes. If I ignore the other fields and presume the following it may be easier to understand:

The comboboxes are populated by the data stored in sheet1 and when the userform is complete, the OK button populates all the data into sheet2

Combobox1 contains names eg, John, Julie, Bob etc
Combobox2 contains colours eg, Red, Blue, Green etc

I want the userform to allow the data to be entered into sheet2 only if it is not an exact duplicate of the choices in BOTH of the comboboxes

For Example
John Red
Julie Red
Bob Blue
John Blue

These are all ok, however, to try and enter John Red again would bring up a message box indicating a duplicate entry and prevent the data from being entered.

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I have created a userform with 3 text boxes. It also has three buttons - clear, Cancel and Generate record button.

User form takes entries in the three text boxes and on clicking the Generate Record button, the values of the three Text Boxes are inserted in Column A, B and C of sheet1. The columns keep on populating with new data on each submit in the row below the last record.

Now it is required to enter data only if the value entered in TextBox1 is new and has not been entered previously in column A. If textbox entry is already aviailable in column A, a message box of 'Record available' shoud be prompted and the text entry must not be allowed until the data entered in TextBox1 is not unique.

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Attachment file : testing.xlsx

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Please see my attached document for clarification.

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[Code] .....

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I have created a userform and a command button to bring up the user form but when I click on the command button and the user form pops up I am not able to enter any data, the entire page freezes

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End Sub
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sample file : [url]

file that might help out: [url]

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I have a userform that I use for data entry with lots of combo boxes, list boxes and text boxes

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The following is OK: (the dots below are meant to illustrate spaces between the columns!!)

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My sub routine is detailed below : .....

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[Code] ......

I have, within a module, the following function code that the user find the entry by adding the first 3 letters of the search they need:

[Code] .....

I would like to know what to change in the function to filter the list, once the user adds a first letter and then press the dropdown from the combobox, to filter the list based on all entries from the first letter to only show entries with that letter.

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Case Else
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I have name and address(street address) columns. I don not want my invitation cards or mails go to same address twice.

As you can see in the file ..all 5 records belong to same address.(address entered in diff styles,some comma,space extra..etc) 4 and 5 are Son and Wife of 1st person. Row 5 and 6 have same text but one extra space in 5th row makes it unique so i need to eliminate such records with same address So can i set some formula so that duplicate rows will be highlighted if any 3-4 words match ?

Attached File : inwell.xlsx‎

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