Spread ASP.NET 18
FarPoint.Web.Spread Assembly / FarPoint.Web.Spread.Model Namespace / DefaultSheetDataModel Class / DataKeyField Property
Example


In This Topic
    DataKeyField Property (DefaultSheetDataModel)
    In This Topic
    Gets or sets a row identifier.
    Syntax
    '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
    Remarks
    Use the key to associate data with the active row.
    Example
    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. 
    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
    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));
}
    See Also

    Reference

    DefaultSheetDataModel Class
    DefaultSheetDataModel Members