DataKeyField Property (DefaultSheetDataModel)

Visual Basic
C#

'Declaration
 
Public Property DataKeyField As Object

'Usage
 
Dim instance As DefaultSheetDataModel
Dim value As Object
 
instance.DataKeyField = value
 
value = instance.DataKeyField

public object DataKeyField {get; set;}

Property Value

Object containing the data key

Use the key to associate data with the active row.

This example creates a new DefaultSheetDataModel, binds it to a database and attaches it to the DataModel of the active sheet. It does not automatically generate its columns based on the columns in the database, but does so on an individual basis.

Visual Basic

PrivateSubPage_Load(ByVal sender As System.Object,ByVal e As System.EventArgs)Handles MyBase.Load

If(IsPostBack)ThenReturn
Dim conStr As String ="Provider=Microsoft.JET.OLEDB.4.0;datasource=d:\\nwind.mdb"
Dim sqlStr As String ="SELECT*FROMEmployees"
Dim conn As System.Data.OleDb.OleDbConnection=New System.Data.OleDb.OleDbConnection(conStr)
Dim ds As DataSet=New DataSet()
Dim da As System.Data.OleDb.OleDbDataAdapter=New System.Data.OleDb.OleDbDataAdapter(sqlStr,conn)
da.Fill(ds,"Employees")
Dim dm As New FarPoint.Web.Spread.Model.DefaultSheetDataModel()
dm.DataSource=ds
dm.AutoGenerateColumns=False
dm.SetModelDataColumn(0,2)
dm.SetModelDataColumn(1,1)
dm.DataKeyField="LastName"
FpSpread1.ActiveSheetView.DataModel=dm
conn.Close()
ListBox1.Items.Add(dm.ColumnCount)
ListBox1.Items.Add(dm.RowCount)
EndSub

C#

private void Page_Load(object sender, System.EventArgs e)
{
string conStr="Provider=Microsoft.JET.OLEDB.4.0;datasource=d:\\nwind.mdb";
string sqlStr="SELECT*FROMEmployees";
System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection(conStr);
DataSet ds = new DataSet();
System.Data.OleDb.OleDbDataAdapter da = new System.Data.OleDb.OleDbDataAdapter(sqlStr,conn);
da.Fill(ds,"Employees");
FarPoint.Web.Spread.Model.DefaultSheetDataModel dm = new FarPoint.Web.Spread.Model.DefaultSheetDataModel(ds,"Employees");
dm.DataSource=ds;
dm.AutoGenerateColumns=false;
dm.SetModelDataColumn(0,2);
dm.SetModelDataColumn(1,1);
dm.DataKeyField="LastName";
FpSpread1.ActiveSheetView.DataModel=dm;
conn.Close();
ListBox1.Items.Add(Convert.ToString(dm.ColumnCount));
ListBox1.Items.Add(Convert.ToString(dm.RowCount));
}

Target Platforms: Windows 7, Windows 8, Windows Vista, Windows Server 2000, Windows 2000 Professional, Windows XP Professional, Windows NT 4.0 Workstation, SP6, Windows NT 4.0 Server, SP6

Reference

DefaultSheetDataModel Class
DefaultSheetDataModel Members