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POHow can I draw a custom ComboBox inside a DataGridViewCell?
 

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  1. POHow can I draw a custom ComboBox inside a DataGridViewCell?
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    <p>I have a custom <code>ComboBox</code> control that I want to use in a <code>DataGridViewCell</code>. I first inherited <code>DataGridViewCell</code> and am trying to override the <code>Paint()</code> method to paint the <code>ComboBox</code> in the cell.</p> <p>My problem is that after inheriting <code>DataGridViewColumn</code> and setting the <code>CellTemplate</code> property to a new instance of my <code>CustomDataGridViewCell</code> class, the cell is grey with no contents. </p> <p>The <code>cBox</code> class variable is instantiated in the object ctor.</p> <pre><code>protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle borderStyle, DataGridViewPaintParts paintParts) {    // Call MyBase.Paint() without passing object for formattedValue param    base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, "", errorText, cellStyle, borderStyle, paintParts);        // Set ComboBox properties    this.cBox.CheckOnClick = true;    this.cBox.DrawMode = System.Windows.Forms.DrawMode.Normal;    this.cBox.DropDownHeight = 1;    this.cBox.IntegralHeight = false;    this.cBox.Location = new System.Drawing.Point(cellBounds.X, cellBounds.Y);    this.cBox.Size = new System.Drawing.Size(cellBounds.Width, cellBounds.Height);    this.cBox.ValueSeparator = ", ";    this.cBox.Visible = true;    this.cBox.Show(); } </code></pre> <p>How can I correctly paint the <code>ComboBox</code> in the cell?</p>
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