Use the Link property to access different properties for a specified link. Use the AddLink method to add a new link between two bars. For instance, the Link(exLinkShowDir) property indicates whether the arrow of the link that specifies the direction, is shown or hidden. Use the RemoveLink method to remove a specific link. Use the FirstLink and NextLink properties to enumerate the links in the control. Use the BeginUpdate and EndUpdate methods to maintain performance while adding columns, items, bars or links. Use the HTMLPicture property to add custom size pictures. Use the LinkFromPoint property to get the key of the link from the cursor. Use the Link(,exLinkToolTip) property to specify the tooltip to be shown when the cursor hovers the link. Use the Link(exLinkGroupBars) to group the linked bars. Use the SelectOnClick property to disable selecting new items when the user clicks the chart area.

Based on the values of the Link Key parameter the Link property changes a property for none, one or multiple links as follows: 

• Link("<*>",Property) = Value changes the Property of all links in the chart.
• Link("<pattern>",Property) = Value changes the Property of all links in the chart that match a specified pattern using wild characters as *,?,# or []

The pattern may include the space character which indicates multiple patterns to be used when matching. For instance "A* *K" indicates all keys that starts on A and all keys that ends on K. If not using a pattern, the Link changes the property for specified key in the chart.

Currently, the single read-only property that supports pattern for the LinkKey parameter is exLinksCount, which counts the links as follows:

• Link("<*>",exLinksCount) counts all links in the chart.
• Link(0,"<pattern>",exLinksCount) counts all links in the chart that match a specified pattern using wild characters as *,?,# or []

The pattern may include the space character which indicates multiple patterns to be used when matching. For instance "A* *K" indicates all keys that start on A and all keys that end on K.

The /NET Assembly version defines get/set shortcut properties as follow ( they start with get_ or set_ keywords ):

• LinkStartItem : Integer, retrieves or sets a value that indicates the handle of the item where the link start
• LinkStartBar : Object, retrieves or sets a value that indicates the key of the bar where the link starts
• LinkEndItem : Integer, retrieves or sets a value that indicates the handle of the item where the link ends
• LinkEndBar : Object, retrieves or sets a value that indicates the key of the bar where the link ends
• LinkVisible : Boolean, specifies whether the link is visible or hidden
• LinkUserData : Object, specifies an extra data associated with the link
• LinkStartPos : AlignmentEnum, specifies the position where the link starts in the source item
• LinkEndPos : AlignmentEnum, specifies the position where the link ends in the target item
• LinkColor : Color, specifies the color to paint the link
• LinkArrowColor : Color, specifies the color to paint the arrow of the link
• LinkArrowColor32 : Color, specifies the color to paint the arrow of the link
• LinkStyle : LinkStyleEnum, specifies the style to paint the link
• LinkWidth : Integer, specifies the width in pixels of the link
• LinkShowDir : Boolean, specifies whether the link shows the direction
• LinkShowRound : Boolean, specifies whether the link is round or rectangular
• LinkText : String, specifies the HTML text being displayed on the link
• LinkToolTip : String, specifies the HTML text being shown when the cursor hovers the link
• LinkSelected : Boolean, specifies whether the link is selected or unselected
• LinkGroupBars : GroupBarsOptionsEnum, groups or ungroups the bars being linked with the specified options
• LinksCount : Integer, specifies the number of the links within the chart

So instead using the get_Link or set_Link properties you can use these functions. 

For instance, the following VB/NET sample changes the link's color:

With Exg2antt1.Items
    .set_LinkColor("L1", Color.Red)
End With

For instance, the following C# sample changes the link's color:

exg2antt1.Items.set_LinkColor("L1", Color.Red);

The following VB sample displays a text plus a picture on a link:

G2antt1.Items.Link("Link", exLinkText) = " <img>excel</img><br><br><b>doc.xls"