I am getting error= connot create a child list fo field patient.
This is a windows ap using vb.net
<code>
Inherits System.Windows.Forms.Form
' intialize variables
Dim Up As New OleDb.OleDbCommand
Dim Con As New OleDb.OleDbConnection
Dim Read As New OleDb.OleDbDataAdapter
Dim patients As New DataSet
Dim Plus As Integer
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
Friend WithEvents PatientGrid As System.Windows.Forms.DataGrid
Friend WithEvents Label1 As System.Windows.Forms.Label
Friend WithEvents CartNumLbl As System.Windows.Forms.Label
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents Label3 As System.Windows.Forms.Label
Friend WithEvents Label4 As System.Windows.Forms.Label
Friend WithEvents timelbl As System.Windows.Forms.Label
Friend WithEvents CartNumCBx As System.Windows.Forms.ComboBox
Friend WithEvents HallCBx As System.Windows.Forms.ComboBox
Friend WithEvents SubmitCartInfoBT As System.Windows.Forms.Button
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Main))
Me.PatientGrid = New System.Windows.Forms.DataGrid
Me.Label1 = New System.Windows.Forms.Label
Me.CartNumLbl = New System.Windows.Forms.Label
Me.SubmitCartInfoBT = New System.Windows.Forms.Button
Me.Label2 = New System.Windows.Forms.Label
Me.Label3 = New System.Windows.Forms.Label
Me.Label4 = New System.Windows.Forms.Label
Me.timelbl = New System.Windows.Forms.Label
Me.CartNumCBx = New System.Windows.Forms.ComboBox
Me.HallCBx = New System.Windows.Forms.ComboBox
CType(Me.PatientGrid, System.ComponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
'
'PatientGrid
'
Me.PatientGrid.DataMember = ""
Me.PatientGrid.HeaderForeColor = System.Drawing.SystemColors.ControlText
Me.PatientGrid.Location = New System.Drawing.Point(8, 152)
Me.PatientGrid.Name = "PatientGrid"
Me.PatientGrid.Size = New System.Drawing.Size(496, 224)
Me.PatientGrid.TabIndex = 0
'
'Label1
'
Me.Label1.Location = New System.Drawing.Point(184, 76)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(48, 16)
Me.Label1.TabIndex = 1
Me.Label1.Text = "Cart Hall"
'
'CartNumLbl
'
Me.CartNumLbl.Location = New System.Drawing.Point(8, 76)
Me.CartNumLbl.Name = "CartNumLbl"
Me.CartNumLbl.Size = New System.Drawing.Size(72, 16)
Me.CartNumLbl.TabIndex = 3
Me.CartNumLbl.Text = "Cart Number"
'
'SubmitCartInfoBT
'
Me.SubmitCartInfoBT.Location = New System.Drawing.Point(240, 104)
Me.SubmitCartInfoBT.Name = "SubmitCartInfoBT"
Me.SubmitCartInfoBT.Size = New System.Drawing.Size(80, 24)
Me.SubmitCartInfoBT.TabIndex = 5
Me.SubmitCartInfoBT.Text = "Submit"
'
'Label2
'
Me.Label2.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
Me.Label2.Location = New System.Drawing.Point(8, 8)
Me.Label2.Name = "Label2"
Me.Label2.Size = New System.Drawing.Size(104, 24)
Me.Label2.TabIndex = 6
Me.Label2.Text = "Patient List"
'
'Label3
'
Me.Label3.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
Me.Label3.Location = New System.Drawing.Point(8, 40)
Me.Label3.Name = "Label3"
Me.Label3.Size = New System.Drawing.Size(248, 24)
Me.Label3.TabIndex = 7
Me.Label3.Text = "Enter Cart Number and Hall Name"
'
'Label4
'
Me.Label4.Location = New System.Drawing.Point(8, 104)
Me.Label4.Name = "Label4"
Me.Label4.Size = New System.Drawing.Size(32, 16)
Me.Label4.TabIndex = 8
Me.Label4.Text = "Time "
'
'timelbl
'
Me.timelbl.Location = New System.Drawing.Point(40, 104)
Me.timelbl.Name = "timelbl"
Me.timelbl.Size = New System.Drawing.Size(72, 16)
Me.timelbl.TabIndex = 9
'
'CartNumCBx
'
Me.CartNumCBx.Location = New System.Drawing.Point(80, 72)
Me.CartNumCBx.Name = "CartNumCBx"
Me.CartNumCBx.Size = New System.Drawing.Size(104, 21)
Me.CartNumCBx.TabIndex = 10
'
'HallCBx
'
Me.HallCBx.Location = New System.Drawing.Point(232, 72)
Me.HallCBx.Name = "HallCBx"
Me.HallCBx.Size = New System.Drawing.Size(128, 21)
Me.HallCBx.TabIndex = 11
'
'Main
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.BackColor = System.Drawing.Color.LightSteelBlue
Me.ClientSize = New System.Drawing.Size(512, 381)
Me.Controls.Add(Me.HallCBx)
Me.Controls.Add(Me.CartNumCBx)
Me.Controls.Add(Me.timelbl)
Me.Controls.Add(Me.Label4)
Me.Controls.Add(Me.Label3)
Me.Controls.Add(Me.Label2)
Me.Controls.Add(Me.SubmitCartInfoBT)
Me.Controls.Add(Me.CartNumLbl)
Me.Controls.Add(Me.Label1)
Me.Controls.Add(Me.PatientGrid)
Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
Me.Name = "Main"
Me.Text = "Main"
CType(Me.PatientGrid, System.ComponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SubmitCartInfoBT.Click
'set up and intialize parameters for use in select statement
Up.Parameters.Add("Hall", Data.OleDb.OleDbType.Variant)
Up.Parameters("Hall").Value = HallCBx.Text
' open connection
Try
Con.Open()
' go to function to read data into datagrid
LoadPatientGrid()
'close connection
Con.Close()
Catch Ex As Exception
'give me a message if an error occurs
MsgBox("Error=" & Ex.Message)
End Try
End Sub
Private Sub Main_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Connection string
Con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Replace(Application.StartupPath, "bin", "") & "AmerChart.mdb;Mode=ReadWrite;Persist Security Info=False"
Up.Connection = Con
Up.CommandType = CommandType.Text
Up.CommandText = "Select * From [Patient] where Hall=@Hall;"
CartNumCBx.Text = VariableModule1.Cart
Read.TableMappings.Add("Table", "Patients")
Read.SelectCommand = Up
'get time
Dim MyTime As DateTime = DateTime.Now()
MyTime = Format(MyTime, "hh:mm:ss tt") ' Returns "05:04:23 PM".
timelbl.Text = MyTime
End Sub
Public Function LoadPatientGrid()
Read.Fill(patients)
PatientGrid.SetDataBinding(patients, "patient")
'PatientGrid.Visible = True
'Show grid and patient info
End Function
End Class
</code>
This is a windows ap using vb.net
<code>
Inherits System.Windows.Forms.Form
' intialize variables
Dim Up As New OleDb.OleDbCommand
Dim Con As New OleDb.OleDbConnection
Dim Read As New OleDb.OleDbDataAdapter
Dim patients As New DataSet
Dim Plus As Integer
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
Friend WithEvents PatientGrid As System.Windows.Forms.DataGrid
Friend WithEvents Label1 As System.Windows.Forms.Label
Friend WithEvents CartNumLbl As System.Windows.Forms.Label
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents Label3 As System.Windows.Forms.Label
Friend WithEvents Label4 As System.Windows.Forms.Label
Friend WithEvents timelbl As System.Windows.Forms.Label
Friend WithEvents CartNumCBx As System.Windows.Forms.ComboBox
Friend WithEvents HallCBx As System.Windows.Forms.ComboBox
Friend WithEvents SubmitCartInfoBT As System.Windows.Forms.Button
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Main))
Me.PatientGrid = New System.Windows.Forms.DataGrid
Me.Label1 = New System.Windows.Forms.Label
Me.CartNumLbl = New System.Windows.Forms.Label
Me.SubmitCartInfoBT = New System.Windows.Forms.Button
Me.Label2 = New System.Windows.Forms.Label
Me.Label3 = New System.Windows.Forms.Label
Me.Label4 = New System.Windows.Forms.Label
Me.timelbl = New System.Windows.Forms.Label
Me.CartNumCBx = New System.Windows.Forms.ComboBox
Me.HallCBx = New System.Windows.Forms.ComboBox
CType(Me.PatientGrid, System.ComponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
'
'PatientGrid
'
Me.PatientGrid.DataMember = ""
Me.PatientGrid.HeaderForeColor = System.Drawing.SystemColors.ControlText
Me.PatientGrid.Location = New System.Drawing.Point(8, 152)
Me.PatientGrid.Name = "PatientGrid"
Me.PatientGrid.Size = New System.Drawing.Size(496, 224)
Me.PatientGrid.TabIndex = 0
'
'Label1
'
Me.Label1.Location = New System.Drawing.Point(184, 76)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(48, 16)
Me.Label1.TabIndex = 1
Me.Label1.Text = "Cart Hall"
'
'CartNumLbl
'
Me.CartNumLbl.Location = New System.Drawing.Point(8, 76)
Me.CartNumLbl.Name = "CartNumLbl"
Me.CartNumLbl.Size = New System.Drawing.Size(72, 16)
Me.CartNumLbl.TabIndex = 3
Me.CartNumLbl.Text = "Cart Number"
'
'SubmitCartInfoBT
'
Me.SubmitCartInfoBT.Location = New System.Drawing.Point(240, 104)
Me.SubmitCartInfoBT.Name = "SubmitCartInfoBT"
Me.SubmitCartInfoBT.Size = New System.Drawing.Size(80, 24)
Me.SubmitCartInfoBT.TabIndex = 5
Me.SubmitCartInfoBT.Text = "Submit"
'
'Label2
'
Me.Label2.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
Me.Label2.Location = New System.Drawing.Point(8, 8)
Me.Label2.Name = "Label2"
Me.Label2.Size = New System.Drawing.Size(104, 24)
Me.Label2.TabIndex = 6
Me.Label2.Text = "Patient List"
'
'Label3
'
Me.Label3.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
Me.Label3.Location = New System.Drawing.Point(8, 40)
Me.Label3.Name = "Label3"
Me.Label3.Size = New System.Drawing.Size(248, 24)
Me.Label3.TabIndex = 7
Me.Label3.Text = "Enter Cart Number and Hall Name"
'
'Label4
'
Me.Label4.Location = New System.Drawing.Point(8, 104)
Me.Label4.Name = "Label4"
Me.Label4.Size = New System.Drawing.Size(32, 16)
Me.Label4.TabIndex = 8
Me.Label4.Text = "Time "
'
'timelbl
'
Me.timelbl.Location = New System.Drawing.Point(40, 104)
Me.timelbl.Name = "timelbl"
Me.timelbl.Size = New System.Drawing.Size(72, 16)
Me.timelbl.TabIndex = 9
'
'CartNumCBx
'
Me.CartNumCBx.Location = New System.Drawing.Point(80, 72)
Me.CartNumCBx.Name = "CartNumCBx"
Me.CartNumCBx.Size = New System.Drawing.Size(104, 21)
Me.CartNumCBx.TabIndex = 10
'
'HallCBx
'
Me.HallCBx.Location = New System.Drawing.Point(232, 72)
Me.HallCBx.Name = "HallCBx"
Me.HallCBx.Size = New System.Drawing.Size(128, 21)
Me.HallCBx.TabIndex = 11
'
'Main
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.BackColor = System.Drawing.Color.LightSteelBlue
Me.ClientSize = New System.Drawing.Size(512, 381)
Me.Controls.Add(Me.HallCBx)
Me.Controls.Add(Me.CartNumCBx)
Me.Controls.Add(Me.timelbl)
Me.Controls.Add(Me.Label4)
Me.Controls.Add(Me.Label3)
Me.Controls.Add(Me.Label2)
Me.Controls.Add(Me.SubmitCartInfoBT)
Me.Controls.Add(Me.CartNumLbl)
Me.Controls.Add(Me.Label1)
Me.Controls.Add(Me.PatientGrid)
Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
Me.Name = "Main"
Me.Text = "Main"
CType(Me.PatientGrid, System.ComponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SubmitCartInfoBT.Click
'set up and intialize parameters for use in select statement
Up.Parameters.Add("Hall", Data.OleDb.OleDbType.Variant)
Up.Parameters("Hall").Value = HallCBx.Text
' open connection
Try
Con.Open()
' go to function to read data into datagrid
LoadPatientGrid()
'close connection
Con.Close()
Catch Ex As Exception
'give me a message if an error occurs
MsgBox("Error=" & Ex.Message)
End Try
End Sub
Private Sub Main_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Connection string
Con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Replace(Application.StartupPath, "bin", "") & "AmerChart.mdb;Mode=ReadWrite;Persist Security Info=False"
Up.Connection = Con
Up.CommandType = CommandType.Text
Up.CommandText = "Select * From [Patient] where Hall=@Hall;"
CartNumCBx.Text = VariableModule1.Cart
Read.TableMappings.Add("Table", "Patients")
Read.SelectCommand = Up
'get time
Dim MyTime As DateTime = DateTime.Now()
MyTime = Format(MyTime, "hh:mm:ss tt") ' Returns "05:04:23 PM".
timelbl.Text = MyTime
End Sub
Public Function LoadPatientGrid()
Read.Fill(patients)
PatientGrid.SetDataBinding(patients, "patient")
'PatientGrid.Visible = True
'Show grid and patient info
End Function
End Class
</code>
