Control.ControlCollection.GetChildIndex Method

Definition

Retrieves the index of a control within the control collection.

Overloads

GetChildIndex(Control)

Retrieves the index of the specified child control within the control collection.

GetChildIndex(Control, Boolean)

Retrieves the index of the specified child control within the control collection, and optionally raises an exception if the specified control is not within the control collection.

GetChildIndex(Control)

Source:
Control.ControlCollection.cs
Source:
Control.ControlCollection.cs
Source:
Control.ControlCollection.cs

Retrieves the index of the specified child control within the control collection.

C#
public int GetChildIndex(System.Windows.Forms.Control child);

Parameters

child
Control

The Control to search for in the control collection.

Returns

A zero-based index value that represents the location of the specified child control within the control collection.

Exceptions

The child control is not in the Control.ControlCollection.

Remarks

The control with an index value of zero is at the top of the z-order, and higher numbers are closer to the bottom.

See also

Applies to

.NET Framework 4.8.1 and other versions
Product Versions
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9, 10

GetChildIndex(Control, Boolean)

Source:
Control.ControlCollection.cs
Source:
Control.ControlCollection.cs
Source:
Control.ControlCollection.cs

Retrieves the index of the specified child control within the control collection, and optionally raises an exception if the specified control is not within the control collection.

C#
public int GetChildIndex(System.Windows.Forms.Control child, bool throwException);
C#
public virtual int GetChildIndex(System.Windows.Forms.Control child, bool throwException);

Parameters

child
Control

The Control to search for in the control collection.

throwException
Boolean

true to throw an exception if the Control specified in the child parameter is not a control in the Control.ControlCollection; otherwise, false.

Returns

A zero-based index value that represents the location of the specified child control within the control collection; otherwise -1 if the specified Control is not found in the Control.ControlCollection.

Exceptions

The childControl is not in the Control.ControlCollection, and the throwException parameter value is true.

Remarks

The control with an index value of zero is at the top of the z-order, and higher numbers are closer to the bottom. A return value of -1 is returned only when the throwException parameter is false.

See also

Applies to

.NET Framework 4.8.1 and other versions
Product Versions
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9, 10