Increasing the height of a combobox

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Hi,
I have to increase the height of a combobox of a windows form. How can i implement it easily. Also i cant increase my font size. Only the control must increase
Thanks in advance.

UPDATED PART
I have done it but with an issue.Please see my code

C#

using System.Windows.Forms;
using System.Drawing;
namespace WindowsFormsApplication1
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        /// 
       

        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.customerBindingSource = new System.Windows.Forms.BindingSource(this.components);
            this.invoiceDataSet = new WindowsFormsApplication1.InvoiceDataSet();
            this.customerTableAdapter = new WindowsFormsApplication1.InvoiceDataSetTableAdapters.CustomerTableAdapter();
            this.comboBox3 = new System.Windows.Forms.ComboBox();
            ((System.ComponentModel.ISupportInitialize)(this.customerBindingSource)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.invoiceDataSet)).BeginInit();
            this.SuspendLayout();
            // 
            // customerBindingSource
            // 
            this.customerBindingSource.DataMember = "Customer";
            this.customerBindingSource.DataSource = this.invoiceDataSet;
            // 
            // invoiceDataSet
            // 
            this.invoiceDataSet.DataSetName = "InvoiceDataSet";
            this.invoiceDataSet.SchemaSerializationMode = System.Data.SchemaSerializationMode.IncludeSchema;
            // 
            // customerTableAdapter
            // 
            this.customerTableAdapter.ClearBeforeFill = true;
            // 
            // comboBox3
            // 
            this.comboBox3.DataSource = this.customerBindingSource;
            this.comboBox3.DisplayMember = "CusName";
            this.comboBox3.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawVariable;
            this.comboBox3.DropDownWidth = 250;
            this.comboBox3.FormattingEnabled = true;
            this.comboBox3.ItemHeight = 55;
            this.comboBox3.Location = new System.Drawing.Point(193, 71);
            this.comboBox3.Name = "comboBox3";
            this.comboBox3.Size = new System.Drawing.Size(58, 61);
            this.comboBox3.TabIndex = 2;
            this.comboBox3.ValueMember = "CusId";
            this.comboBox3.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.comboBox3_DrawItem);
            this.comboBox3.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.comboBox3_MeasureItem);
            // 
            // Form1
            // 
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Inherit;
            this.ClientSize = new System.Drawing.Size(482, 270);
            this.Controls.Add(this.comboBox3);
            this.MinimumSize = new System.Drawing.Size(0, 30);
            this.Name = "Form1";
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            ((System.ComponentModel.ISupportInitialize)(this.customerBindingSource)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.invoiceDataSet)).EndInit();
            this.ResumeLayout(false);

        }
        public class SeparatorItem
        {
            private object data;
            public SeparatorItem(object data)
            {
                this.data = data;
            }
            public override string ToString()
            {
                if (data != null)
                {
                    return data.ToString();
                }
                return base.ToString();
            }
        }
        private void comboBox3_MeasureItem(object sender,System.Windows.Forms.MeasureItemEventArgs e)
        {
            object comboBoxItem = comboBox3.Items[e.Index];
            e.ItemWidth = 260;
            e.ItemHeight = 55;
           
            Size textSize = e.Graphics.MeasureString(comboBoxItem.ToString(), comboBox3.Font).ToSize();
    
            e.ItemWidth = textSize.Width;

          
     
        }
        private void comboBox3_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
        {
            Font myFont = new System.Drawing.Font("Comic Sans", 11);
           object comboBoxItem = comboBox3.Items[e.Index];
  
         
            bool isSeparatorItem = (comboBoxItem is SeparatorItem);
            e.DrawBackground();
            e.DrawFocusRectangle();
            using (Brush textBrush = new SolidBrush(e.ForeColor))
            {
                Rectangle bounds = e.Bounds;


                using (StringFormat format = new StringFormat())
                {
                    format.LineAlignment = StringAlignment.Center;
                    format.Alignment = StringAlignment.Near;
                   // e.Graphics.DrawString(comboBoxItem.ToString(), comboBox3.Font, textBrush, bounds, format);
                    e.Graphics.DrawString(comboBoxItem.ToString(), comboBox3.Font, textBrush, bounds);
                }

            }
     
        }
        #endregion


        private InvoiceDataSet invoiceDataSet;
        private System.Windows.Forms.BindingSource customerBindingSource;
        private InvoiceDataSetTableAdapters.CustomerTableAdapter customerTableAdapter;
        private ComboBox comboBox3;
    }
}

But im getting "System.Data.DataRowView" as my text. Not the text in the combobox. But when i pick from the combobox i get the correct value in combobox(Though the display text is "System.Data.DataRowView" )

Posted 30-Sep-13 18:45pm

id-athul

Updated 1-Oct-13 0:04am

v5

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Comments

Ron Beyer 1-Oct-13 0:47am

Combobox.Height = whatever; Can't be that simple though, are you asking the wrong question? Are you asking about the items in the combobox? Are you wanting to dynamically calculate it? What are you really trying to do?

id-athul 1-Oct-13 0:52am

Thanks, is it like Combobox.Height="30"; can you please tell me the syntax and the place where to add this code

Ron Beyer 1-Oct-13 0:55am

You put it in the constructor of the code behind, or wherever you need to resize it, it really depends on what trigger (what happens that makes it resize) that tells you where to put it. BTW, you would not use the quotes when doing it, it would be like Combobox.Height = 30; no quotes or you will get a type conversion error.

id-athul 1-Oct-13 0:59am

I want it in form load(ie whenever you see the combo box)
I used public Form1()
{
InitializeComponent();
comboBox1.Height = 230;
}

But its not working, It works only when the font is increased, But i dont want to increase the font

Ron Beyer 1-Oct-13 1:02am

You may need to use the Combobox.ItemHeight instead. See the link for some details.

id-athul 1-Oct-13 1:24am

I have given comboBox1.ItemHeight = 120;
and have set DrawMode=OwnerDrawVariable
But its still not working

Thomas ktg 1-Oct-13 2:52am

I think you can't set the height directly as it's dependent on font size. I dont know what is the other way to do without research.

id-athul 1-Oct-13 3:17am

Ok, Thanks for your response

4 solutions

Solution 1

You can't - A combobox always auto sizes to match the font, and AFAIK there is no may to change that. If you really want the text "floating" in the middle of a blank space, then you will have to implement your own ComboBox control from scratch.

Posted 30-Sep-13 22:38pm

OriginalGriff

Comments

id-athul 1-Oct-13 6:06am

Please see my updated question. also this link
http://msdn.microsoft.com/en-us/library/system.windows.forms.combobox.dropdownstyle.aspx

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id-athul · Accepted Answer · 2013-10-01T02:23:00

I've found the solution, Please checkout the changes (Bold Text) i've made

private void comboBox3_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{

DataRowView drv = (DataRowView)comboBox3.Items[e.Index];
string name = drv["CusName"].ToString();

Font myFont = new System.Drawing.Font("Comic Sans", 11);
object comboBoxItem = comboBox3.Items[e.Index];

e.DrawBackground();
e.DrawFocusRectangle();
using (Brush textBrush = new SolidBrush(e.ForeColor))
{
Rectangle bounds = e.Bounds;

using (StringFormat format = new StringFormat())
{
format.LineAlignment = StringAlignment.Center;
format.Alignment = StringAlignment.Near;
e.Graphics.DrawString(name, comboBox3.Font, textBrush, bounds, format);

}
}

}

id-athul · Accepted Answer · 2013-10-01T02:25:00

I've found the solution, Please checkout the changes (Bold Text) i've made

private void comboBox3_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{

DataRowView drv = (DataRowView)comboBox3.Items[e.Index];
string name = drv["CusName"].ToString();

Font myFont = new System.Drawing.Font("Comic Sans", 11);
object comboBoxItem = comboBox3.Items[e.Index];

e.DrawBackground();
e.DrawFocusRectangle();
using (Brush textBrush = new SolidBrush(e.ForeColor))
{
Rectangle bounds = e.Bounds;

using (StringFormat format = new StringFormat())
{
format.LineAlignment = StringAlignment.Center;
format.Alignment = StringAlignment.Near;
e.Graphics.DrawString(name, comboBox3.Font, textBrush, bounds, format);

}
}

}

Renju Vinod · Accepted Answer · 2013-10-01T02:27:00

Please try this

changed

C#

object comboBoxItem = comboBox3.Items[e.Index];
e.Graphics.DrawString(comboBoxItem.ToString(), comboBox3.Font, textBrush, bounds);

to

C#

DataRowView comboBoxItem = (DataRowView)comboBox1.Items[e.Index];
e.Graphics.DrawString(comboBoxItem["city_desc"].ToString(), comboBox1.Font, textBrush, bounds);

Designer.cs

C#

private void InitializeComponent()
{
            this.comboBox1 = new System.Windows.Forms.ComboBox();
            this.citymastBindingSource = new System.Windows.Forms.BindingSource(this.components);
            this._TestDataSet = new WinTest._TestDataSet();
            this.city_mastTableAdapter = new winTest._TestDataSetTableAdapters.city_mastTableAdapter();
            
            this.comboBox1.DataSource = this.citymastBindingSource;
            this.comboBox1.DisplayMember = "city_desc";
            this.comboBox1.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawVariable;
            this.comboBox1.FormattingEnabled = true;
            this.comboBox1.ItemHeight = 25;
            this.comboBox1.Location = new System.Drawing.Point(367, 74);
            this.comboBox1.Name = "comboBox1";
            this.comboBox1.Size = new System.Drawing.Size(171, 31);
            this.comboBox1.TabIndex = 4;
            this.comboBox1.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.comboBox1_DrawItem);  
            

            this.citymastBindingSource.DataMember = "city_mast";
            this.citymastBindingSource.DataSource = this._TestDataSet;
            // 
            //_TestDataSet
            // 
            this._TestDataSet.DataSetName = "_TestDataSet";
            this._TestDataSet.SchemaSerializationMode = System.Data.SchemaSerializationMode.IncludeSchema;
            // 
            // city_mastTableAdapter
            // 
            this.city_mastTableAdapter.ClearBeforeFill = true;

}

Code.cs

C#

private void comboBox1_DrawItem(object sender, DrawItemEventArgs e)
        {
            Font myFont = new System.Drawing.Font("Comic Sans", 11);
            DataRowView comboBoxItem = (DataRowView)comboBox1.Items[e.Index];

            
            //bool isSeparatorItem = (comboBoxItem is SeparatorItem);
            e.DrawBackground();
            e.DrawFocusRectangle();
            using (Brush textBrush = new SolidBrush(e.ForeColor))
            {
                Rectangle bounds = e.Bounds;


                using (StringFormat format = new StringFormat())
                {
                    format.LineAlignment = StringAlignment.Center;
                    format.Alignment = StringAlignment.Near;
                    // e.Graphics.DrawString(comboBoxItem.ToString(), comboBox3.Font, textBrush, bounds, format);
                    e.Graphics.DrawString(comboBoxItem["city_desc"].ToString(), comboBox1.Font, textBrush, bounds);
                }

            }
        }

    }

Increasing the height of a combobox

4 solutions

Solution 1

Solution 2

Solution 3

Solution 4

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