windowsforms-devexpress-dot-xtragantt-df0f292d.md
Enumerates values that specify types of dependencies between tasks.
Namespace : DevExpress.XtraGantt
Assembly : DevExpress.XtraGantt.v25.2.dll
NuGet Package : DevExpress.Win.Gantt
public enum DependencyType
Public Enum DependencyType
| Name | Description | Value |
|---|---|---|
FinishToStart |
The successor starts after the predecessor finishes.
|
0
|
| FinishToFinish |
The successor finishes after the predecessor finishes.
|
1
|
| StartToFinish |
The successor finishes after the predecessor starts.
|
2
|
| StartToStart |
The successor starts after the predecessor starts.
|
3
|
The following properties accept/return DependencyType values:
The GanttControl.DependencySource property specifies the data source that contains dependencies. Use the TypeFieldName property to specify the name of the field in the data source that stores dependency types.
The field’s data type should be either DependencyType or Int32. The DependencyType enumeration is a set of named integer constants. You can store dependency types as integers in the data source.
The code below uses integer values to specify dependency types.
using DevExpress.XtraGantt;
using System.Data;
ganttControl1.DependencySource = GetDependencies();
private object GetDependencies() {
DataTable table = new DataTable();
DataColumn predecessor = new DataColumn("PredecessorID", typeof(int));
DataColumn successor = new DataColumn("SuccessorID", typeof(int));
DataColumn dependencyType = new DataColumn("DependencyType", typeof(DependencyType));
DataColumn lag = new DataColumn("TimeLag", typeof(TimeSpan));
table.Columns.AddRange(new DataColumn[] { predecessor, successor, dependencyType, lag });
//Note that an integer value is used to specify the dependency type.
table.Rows.Add(new object[] { 1, 2, 2, new TimeSpan(12, 0, 0) });
table.Rows.Add(new object[] { 2, 3, 3, null });
return table;
}
Imports DevExpress.XtraGantt
Imports System.Data
ganttControl1.DependencySource = GetDependencies()
Private Function GetDependencies() As Object
Dim table As DataTable = New DataTable()
Dim predecessor As DataColumn = New DataColumn("PredecessorID", GetType(Integer))
Dim successor As DataColumn = New DataColumn("SuccessorID", GetType(Integer))
Dim dependencyType As DataColumn = New DataColumn("DependencyType", GetType(DependencyType))
Dim lag As DataColumn = New DataColumn("TimeLag", GetType(TimeSpan))
table.Columns.AddRange(New DataColumn() {predecessor, successor, dependencyType, lag})
'Note that an integer value is used to specify the dependency type.
table.Rows.Add(New Object() {1, 2, 2, New TimeSpan(12, 0, 0)})
table.Rows.Add(New Object() {2, 3, 3, Nothing})
Return table
End Function
See Also