Combobox Autocomplete

[Thanvir Hussain]

When I create a autocomplete combobox dynamically then it does not shown any dropdown item. Even afte assigning a datasource.

#region Copyright Syncfusion Inc. 2001 - 2007
//
// Copyright Syncfusion Inc. 2001 - 2007. All rights reserved.
//
// Use of this code is subject to the terms of our license.
// A copy of the current license can be obtained at any time by e-mailing
// [e-mail]. Any infringement will be prosecuted under
// applicable laws.
//
#endregion

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using Syncfusion.Windows.Forms.Tools;
using Syncfusion.Windows.Forms;

namespace ComboBoxAutoCompleteDemo
{
///

/// Summary description for Form1.
///

public class Form1 : System.Windows.Forms.Form
{
private ArrayList itemsList = new ArrayList();
private ArrayList alphaList = new ArrayList();
private System.ComponentModel.IContainer components;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.ImageList imageList1;
private System.Windows.Forms.GroupBox groupBox1;
private ComboBoxAutoComplete comboBoxAutoComplete2;
private Syncfusion.Windows.Forms.Tools.ComboBoxAutoComplete comboBoxAutoComplete1;

public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();

//
// TODO: Add any constructor code after InitializeComponent call
//
}

///

/// Clean up any resources being used.
///

protected override void Dispose( bool disposing )
{
if( disposing )
{
}
base.Dispose( disposing );
}

#region Windows Form Designer generated code
///

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

private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
this.comboBoxAutoComplete1 = new Syncfusion.Windows.Forms.Tools.ComboBoxAutoComplete();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.label1 = new System.Windows.Forms.Label();
this.imageList1 = new System.Windows.Forms.ImageList(this.components);
this.comboBoxAutoComplete2 = new Syncfusion.Windows.Forms.Tools.ComboBoxAutoComplete();
((System.ComponentModel.ISupportInitialize)(this.comboBoxAutoComplete1.AutoCompleteControl)).BeginInit();
this.groupBox1.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.comboBoxAutoComplete2.AutoCompleteControl)).BeginInit();
this.SuspendLayout();
//
// comboBoxAutoComplete1
//
//
//
//
this.comboBoxAutoComplete1.AutoCompleteControl.AccessibleDescription = null;
this.comboBoxAutoComplete1.AutoCompleteControl.AccessibleName = null;
this.comboBoxAutoComplete1.AutoCompleteControl.AccessibleRole = System.Windows.Forms.AccessibleRole.None;
this.comboBoxAutoComplete1.AutoCompleteControl.AdjustHeightToItemCount = true;
this.comboBoxAutoComplete1.AutoCompleteControl.AutoAddItem = false;
this.comboBoxAutoComplete1.AutoCompleteControl.AutoSerialize = true;
this.comboBoxAutoComplete1.AutoCompleteControl.CategoryName = "";
this.comboBoxAutoComplete1.AutoCompleteControl.ChangeDataManagerPosition = true;
this.comboBoxAutoComplete1.AutoCompleteControl.OverrideCombo = true;
this.comboBoxAutoComplete1.AutoCompleteControl.ParentForm = this.groupBox1;
this.comboBoxAutoComplete1.AutoCompleteControl.PreferredHeight = 200;
this.comboBoxAutoComplete1.AutoCompleteControl.SelectedIndex = -1;
this.comboBoxAutoComplete1.AutoCompleteControl.SelectedValue = "";
this.comboBoxAutoComplete1.AutoCompleteControl.ShowCloseButton = true;
this.comboBoxAutoComplete1.AutoCompleteControl.ShowGripper = true;
this.comboBoxAutoComplete1.DropDownWidth = 352;
this.comboBoxAutoComplete1.ForeColor = System.Drawing.SystemColors.HotTrack;
this.comboBoxAutoComplete1.ItemHeight = 13;
this.comboBoxAutoComplete1.Location = new System.Drawing.Point(64, 136);
this.comboBoxAutoComplete1.Name = "comboBoxAutoComplete1";
this.comboBoxAutoComplete1.ParentForm = this.groupBox1;
this.comboBoxAutoComplete1.Size = new System.Drawing.Size(240, 21);
this.comboBoxAutoComplete1.TabIndex = 4;
this.comboBoxAutoComplete1.UpdateComboSelectionProperties = true;
//
// groupBox1
//
this.groupBox1.Controls.Add(this.label1);
this.groupBox1.Controls.Add(this.comboBoxAutoComplete1);
this.groupBox1.Location = new System.Drawing.Point(88, 48);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(376, 216);
this.groupBox1.TabIndex = 6;
this.groupBox1.TabStop = false;
//
// label1
//
this.label1.ImageAlign = System.Drawing.ContentAlignment.BottomRight;
this.label1.ImageIndex = 0;
this.label1.ImageList = this.imageList1;
this.label1.Location = new System.Drawing.Point(64, 32);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(256, 80);
this.label1.TabIndex = 5;
this.label1.Text = "The ComboBoxAutoComplete control combines a combo box control with an AutoComplet" +
"e control to provide autocompletion for that instance of the combo box.";
//
// imageList1
//
this.imageList1.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imageList1.ImageStream")));
this.imageList1.TransparentColor = System.Drawing.Color.Transparent;
this.imageList1.Images.SetKeyName(0, "");
//
// comboBoxAutoComplete2
//
//
//
//
this.comboBoxAutoComplete2.AutoCompleteControl.AccessibleDescription = null;
this.comboBoxAutoComplete2.AutoCompleteControl.AccessibleName = null;
this.comboBoxAutoComplete2.AutoCompleteControl.AccessibleRole = System.Windows.Forms.AccessibleRole.None;
this.comboBoxAutoComplete2.AutoCompleteControl.AdjustHeightToItemCount = true;
this.comboBoxAutoComplete2.AutoCompleteControl.AutoAddItem = false;
this.comboBoxAutoComplete2.AutoCompleteControl.AutoSerialize = true;
this.comboBoxAutoComplete2.AutoCompleteControl.CategoryName = "";
this.comboBoxAutoComplete2.AutoCompleteControl.ChangeDataManagerPosition = true;
this.comboBoxAutoComplete2.AutoCompleteControl.OverrideCombo = true;
this.comboBoxAutoComplete2.AutoCompleteControl.ParentForm = this;
this.comboBoxAutoComplete2.AutoCompleteControl.PreferredHeight = 200;
this.comboBoxAutoComplete2.AutoCompleteControl.SelectedIndex = -1;
this.comboBoxAutoComplete2.AutoCompleteControl.SelectedValue = "";
this.comboBoxAutoComplete2.AutoCompleteControl.ShowCloseButton = true;
this.comboBoxAutoComplete2.AutoCompleteControl.ShowGripper = true;
this.comboBoxAutoComplete2.Location = new System.Drawing.Point(283, 282);
this.comboBoxAutoComplete2.Name = "comboBoxAutoComplete2";
this.comboBoxAutoComplete2.ParentForm = this;
this.comboBoxAutoComplete2.Size = new System.Drawing.Size(244, 21);
this.comboBoxAutoComplete2.TabIndex = 7;
this.comboBoxAutoComplete2.Text = "comboBoxAutoComplete2";
this.comboBoxAutoComplete2.UpdateComboSelectionProperties = true;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(200)))), ((int)(((byte)(219)))));
this.ClientSize = new System.Drawing.Size(552, 374);
this.Controls.Add(this.comboBoxAutoComplete2);
this.Controls.Add(this.groupBox1);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
this.MaximizeBox = false;
this.Name = "Form1";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "ComboBoxAutoCompleteDemo";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this.comboBoxAutoComplete1.AutoCompleteControl)).EndInit();
this.groupBox1.ResumeLayout(false);
((System.ComponentModel.ISupportInitialize)(this.comboBoxAutoComplete2.AutoCompleteControl)).EndInit();
this.ResumeLayout(false);

}
#endregion

///

/// The main entry point for the application.
///

[STAThread]
static void Main()
{
Application.Run(new Form1());
}

private void Form1_Load(object sender, System.EventArgs e)
{

#region DataSource
this.alphaList.AddRange(new String[]{"A",
"B",
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z"
});

foreach(string s in this.alphaList)
{
for(int i = 0; i < 15; i++)
{
this.itemsList.Add(s + i.ToString());
}
}

this.comboBoxAutoComplete1.AutoCompleteControl.DataSource = this.itemsList;
#endregion
ComboBoxAutoComplete comboBoxAutoComplete3 = new ComboBoxAutoComplete();
comboBoxAutoComplete3.AutoCompleteControl.DataSource = this.itemsList;
this.Controls.Add(comboBoxAutoComplete3);
}



}
}

In the code above the comboboxautocomplete3 does not shown any items.

thanks
thanvir

[JayaLakshmi]

Hi Thanvir,

Thank you for using Syncfusion products.

Could you please include the following code snippet to display the dropdown of ComboBoxAutoComplete control.

[C#]

this.comboBoxAutoComplete1.ParentForm = this;

The following sample illustrates this.

http://websamples.syncfusion.com/samples/Tools.Windows/F63650/main.htm

Kindly let me know if this helps.

Regards,
Jaya

[Thanvir Hussain]

Hi,
I have inherited from the ComboboxAutoComplete to create a custom combobox. But the auto complete does not work. Whenever I click on the combo box I get a exception.

System.ArgumentOutOfRangeException was unhandled by user code
Message="Index and length must refer to a location within the string.\rParameter name: length"
Source="mscorlib"
ParamName="length"
StackTrace:
at System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy)
at Syncfusion.Windows.Forms.Tools.ComboBoxAutoComplete.PreProcessMessage(Message& msg)
at System.Windows.Forms.Control.PreProcessControlMessageInternal(Control target, Message& msg)
at System.Windows.Forms.Application.ThreadContext.PreTranslateMessage(MSG& msg)
at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FPreTranslateMessage(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
at System.Windows.Forms.Form.ShowDialog()
at MDIPricer.SpreadSheet.frmSpreadSheetPricer.CaptureTrade() in Y:\fox\foxclient\NewClient\MDIPricer\SpreadSheet\frmSpreadSheetPricer.cs:line 356
at MDIPricer.SpreadSheet.frmSpreadSheetPricer.m_Grid_CellButtonClicked(Object sender, GridCellButtonClickedEventArgs e) in Y:\fox\foxclient\NewClient\MDIPricer\SpreadSheet\frmSpreadSheetPricer.cs:line 345
at Syncfusion.Windows.Forms.Grid.GridControlBase.OnCellButtonClicked(GridCellButtonClickedEventArgs e)
at Syncfusion.Windows.Forms.Grid.GridControlBase.RaiseCellButtonClicked(Int32 rowIndex, Int32 colIndex, Int32 index, GridCellButton button)

thanks
thanvir

>Hi Thanvir,

Thank you for using Syncfusion products.

Could you please include the following code snippet to display the dropdown of ComboBoxAutoComplete control.

[C#]

this.comboBoxAutoComplete1.ParentForm = this;

The following sample illustrates this.

http://websamples.syncfusion.com/samples/Tools.Windows/F63650/main.htm

Kindly let me know if this helps.

Regards,
Jaya

BrokerCombo.zip

[JayaLakshmi]

Hi Thanvir,

Thanks for providing us the CS file.

I have created a sample that is close to your requirement.

Could you please compile the below sample and let me know if you still running into issues?

http://websamples.syncfusion.com/samples/Tools.Windows/F63650_1/main.htm

Thanks for your patience.

Regards,
Jaya