public void Add() { DataGridViewColumnCollection c; c = (new DataGridView()).Columns; c.Add("A", "B"); DataGridViewColumn col = c [0]; Assert.AreEqual("DataGridViewTextBoxColumn { Name=A, Index=0 }", col.ToString(), "T3"); Assert.AreEqual("DataGridViewTextBoxColumn", col.GetType().Name, "G2"); Assert.AreEqual(DataGridViewAutoSizeColumnMode.NotSet, col.AutoSizeMode, "#A col.AutoSizeMode"); Assert.IsNotNull(col.CellTemplate, "#A col.CellTemplate"); Assert.IsNotNull(col.CellType, "#A col.CellType"); Assert.IsNull(col.ContextMenuStrip, "#A col.ContextMenuStrip"); Assert.IsNotNull(col.DataGridView, "#A col.DataGridView"); Assert.AreEqual(@"", col.DataPropertyName, "#A col.DataPropertyName"); Assert.IsNotNull(col.DefaultCellStyle, "#A col.DefaultCellStyle"); Assert.IsNotNull(col.DefaultHeaderCellType, "#A col.DefaultHeaderCellType"); Assert.AreEqual(false, col.Displayed, "#A col.Displayed"); Assert.AreEqual(0, col.DisplayIndex, "#A col.DisplayIndex"); Assert.AreEqual(0, col.DividerWidth, "#A col.DividerWidth"); Assert.AreEqual(100, col.FillWeight, "#A col.FillWeight"); Assert.AreEqual(false, col.Frozen, "#A col.Frozen"); Assert.AreEqual(true, col.HasDefaultCellStyle, "#A col.HasDefaultCellStyle"); Assert.IsNotNull(col.HeaderCell, "#A col.HeaderCell"); Assert.AreEqual(@"B", col.HeaderText, "#A col.HeaderText"); Assert.AreEqual(0, col.Index, "#A col.Index"); Assert.AreEqual(DataGridViewAutoSizeColumnMode.None, col.InheritedAutoSizeMode, "#A col.InheritedAutoSizeMode"); Assert.IsNotNull(col.InheritedStyle, "#A col.InheritedStyle"); Assert.AreEqual(false, col.IsDataBound, "#A col.IsDataBound"); Assert.AreEqual(5, col.MinimumWidth, "#A col.MinimumWidth"); Assert.AreEqual(@"A", col.Name, "#A col.Name"); Assert.AreEqual(false, col.ReadOnly, "#A col.ReadOnly"); Assert.AreEqual(DataGridViewTriState.True, col.Resizable, "#A col.Resizable"); Assert.AreEqual(false, col.Selected, "#A col.Selected"); Assert.IsNull(col.Site, "#A col.Site"); Assert.AreEqual(DataGridViewColumnSortMode.Automatic, col.SortMode, "#A col.SortMode"); Assert.AreEqual(DataGridViewElementStates.Visible, col.State, "#A col.State"); Assert.IsNull(col.Tag, "#A col.Tag"); Assert.AreEqual(@"", col.ToolTipText, "#A col.ToolTipText"); Assert.IsNull(col.ValueType, "#A col.ValueType"); Assert.AreEqual(true, col.Visible, "#A col.Visible"); Assert.AreEqual(100, col.Width, "#A col.Width"); }