For example, you might programmatically resize all columns immediately after loading data, or you might programmatically resize a specific row after a particular cell value has been modified. Get Preferred Width() methods or by calling protected resizing method overloads in a derived Data Grid View control. You will typically call the programmatic resizing methods at specific times. Content-based automatic sizing modes do not affect rows, columns, or headers that you have hidden by setting the row or column Visible property or the control Row Headers Visible or Column Headers Visible properties to false.
If you need to determine whether the Resizable property value of a row or column is inherited, examine its State property. Because Not Set restores the value inheritance, the Resizable property will never return a Not Set value unless the row or column has not been added to a Data Grid View control. To configure the sizing mode for headers and rows and for columns that do not override the control value, set one or more of the following Data Grid View properties: To override the control's column sizing mode for an individual column, set its Auto Size Mode property to a value other than Not Set. If you configure both rows and columns for content-based automatic sizing and Wrap Mode is enabled, the Data Grid View control will adjust sizes whenever cell contents changed and will use an ideal cell height-to-width ratio when calculating new sizes. To avoid performance penalties, use the automatic sizing modes that calculate sizes based only on the displayed rows rather than analyzing every row in the control.
Use content-based automatic resizing with caution when working with large amounts of data. When automatic sizing is disabled, you can programmatically set the exact width or height of rows, columns, or headers through the following properties: These methods will resize rows, columns, or headers once rather than configuring them for continuous resizing. Programmatic content-based resizing affects rows, columns, and headers regardless of their visibility. For all sizing enumerations, values with names that refer to displayed cells limit their calculations to cells in displayed rows. With these values, you can limit which cells are used to calculate the preferred sizes. To String()If Not tx Is Nothing And Also tx "" Then Dim o As Object Dim ari As Boolean = False Dim ari2 As Integer = 0For Each c As Object In my Col. Items If o = tx Thenari = True Exit For End If Next If ari = False Thenmy Col.