[RESOLVED] [2005] TextBox MaximumSize From SQL Field

I want to be able to retrieve the field length in the SQL Table and apply that to the text box..

VarChar(50)
TextBox1.MaximumSize = 50

Thanks -

How are you getting your data from the database? Are you populating a DataTable? If so then the MaxLength property of the corresponding DataColumn is the value you want.

By the way, the TextBox property is MaxLength too, not MaximumSize.

Quote:

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Originally Posted by jmcilhinney

By the way, the TextBox property is MaxLength too, not MaximumSize.

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- Gotcha

Ok - Didn't know where that property could be found -

Dt.Columns(0).MaxLength - and then apply that to the textbox.maxlength

When I do that - I get a -1 for the MaxLength of the column -

vb Code:

Dim dtMax as DataTable
    ' selectdt is a function that returns the datatable (used other places and works fine)
    ' oConn is the sql connection - used throughout the program
 
dtMax = SelectDT("SELECT * FROM table_name", oConn)
 
txtShortName.MaxLength = dtMax.Columns("Sname").MaxLength
txtLongName.MaxLength = dtMax.Columns("Name").MaxLength

Also if I change it to Columns(0) and Columns(1) the MaxLength is still -1

How exactly are you populating your DataTable?

using a datadapter

vb Code:

da.fill (dt)

You need to set the MissingSchemaAction property of your adapter to AddWithKey in order to retrieve the full schema.

Got it - Thanks a lot