在datagridview单元格中只键入一些字符

DataGridView

private void dataGridView1_CellValidating(object sender,
        DataGridViewCellValidatingEventArgs e)
    {
        string headerText = 
            dataGridView1.Columns[e.ColumnIndex].HeaderText;

        // Abort validation if cell is not in the Age column.
        if (!headerText.Equals(\"Age\")) return;

        int output;

        // Confirm that the cell is an integer.
        if (!int.TryParse(e.FormattedValue.ToString(), out output))
        {
            dataGridView1.Rows[e.RowIndex].ErrorText =
                \"Age must be numeric\";
            e.Cancel = true;
        }

    }

    void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
    {
        // Clear the row error in case the user presses ESC.   
        dataGridView1.Rows[e.RowIndex].ErrorText = String.Empty;
    }

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
    e.Control.KeyPress -= TextboxNumeric_KeyPress;
    if ((int)(((System.Windows.Forms.DataGridView)(sender)).CurrentCell.ColumnIndex) == 1)
    {
         e.Control.KeyPress += TextboxNumeric_KeyPress;
    }
}

private void TextboxNumeric_KeyPress(object sender, KeyPressEventArgs e)
{
    bool nonNumberEntered = true;

    if ((e.KeyChar >= 48 && e.KeyChar <= 57) || e.KeyChar == 8)
    {
        nonNumberEntered = false;
    }

    if (nonNumberEntered)
     {
        // Stop the character from being entered into the control since it is non-numerical.
        e.Handled = true;
    }
    else
    {
        e.Handled = false;
    }
}

private void dataGridView1_CellParsing(object sender, DataGridViewCellParsingEventArgs e)
{
    // If this is column 1
    if (e.ColumnIndex == 1)
    {
        // Remove special chars from cell value
        e.Value = RemoveSpecialCharacters(e.Value.ToString());
        e.ParsingApplied = true;
    }
}