DataGridViewRowCollection.Insert Method (Int32, Int32)

 
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Inserts the specified number of rows into the collection at the specified location.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public virtual void Insert(
	int rowIndex,
	int count
)

Parameters

rowIndex
Type: System.Int32

The position at which to insert the rows.

count
Type: System.Int32

The number of rows to insert into the DataGridViewRowCollection.

Exception Condition
ArgumentOutOfRangeException

rowIndex is less than zero or greater than the number of rows in the collection.

-or-

count is less than 1.

InvalidOperationException

The associated DataGridView control is performing one of the following actions that temporarily prevents new rows from being added:

  • Selecting all cells in the control.

  • Clearing the selection.

-or-

This method is being called from a handler for one of the following DataGridView events:

-or-

The DataSource property of the DataGridView is not null.

-or-

The DataGridView has no columns.

-or-

rowIndex is equal to the number of rows in the collection and the AllowUserToAddRows property of the DataGridView is set to true.

-or-

The row returned by the DataGridView.RowTemplate property has more cells than there are columns in the control.

-or-

This operation would insert a frozen row after unfrozen rows or an unfrozen row before frozen rows.

The Insert(Int32, Int32) method adds rows that are based on the RowTemplate of the DataGridView. The new row is shared, if possible. Be sure that the row specified in the RowTemplate property can be shared for best scalability. For more information, see Best Practices for Scaling the Windows Forms DataGridView Control.

Rows in the control are not automatically sorted when new rows are added. To sort new rows into their correct position, call the DataGridView.Sort method in a DataGridView.RowsAdded event handler. You might also want to call the DataGridView.Sort method in a CellValueChanged event handler to sort the rows when the user modifies a cell.

.NET Framework
Available since 2.0
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