设置ComboBox行间距

虽然有许多第三方控件可以实现ComboBox行间距的设置，但有时候引用太多的第三方控件也是一件麻烦事。其实VisualStudio内置的ComboBox控件稍加控制也能实现“行间距设置”的效果。

  C#代码如下：

          //设置Comobox的行间距

        public static void cmbBind(ComboBox list, int itemHeight)

        {

            list.DropDownStyle = ComboBoxStyle.DropDownList;

            list.ItemHeight = itemHeight;

            list.DrawMode = DrawMode.OwnerDrawFixed;

            list.DrawItem += new DrawItemEventHandler(delegate(object sender, DrawItemEventArgs e)

            {

                if (e.Index < 0)

                {

                    return;

                }

                e.DrawBackground();

                e.DrawFocusRectangle();

                e.Graphics.DrawString(list.Items[e.Index].ToString(), e.Font, new SolidBrush(e.ForeColor), e.Bounds.X, e.Bounds.Y + 3);

            });

        }

    引用代码如下：

cmbBind(cmbDepartment, 20);   //此处cmbDepartment为ComboBox控件的Name属性，20为行间距

   当然，在这里，可能有些人会和我遇到同样一个问题：假使设置了ComboBox的DataSource属性后，例如：

            cmbDepartment.DataSource = DS_Temp.Tables["Department"];

            cmbDepartment.DisplayMember = "Department_Name";

            cmbDepartment.ValueMember = "Department_Name";

   以上代码会失效，所以，我们只能摒弃DataSource属性，利用循环来依次添加Items，例如：

            for (int i = 0; i < DS_Temp.Tables["Department"].Rows.Count; i++)

            {

                cmbDepartment.Items.Add(DS_Temp.Tables["Department"].Rows[i][0].ToString());

            

            }