dataset will not save to database

db Ireland
  • 11 years ago
    Edit: If I set the value of the field hardcoded it still does not save and haschanges is still false:

    e.g
    m_ds.Tables("tblScripts").Rows(0).Item("Script_Desc") = "HELP"

    Hi,

    Please someone help me I'm at my wits end.  My texbox populates with the data.  I can edit it and the dataset gets updated.....but the data will not save to the database!  dataset.haschanges = false.  But if I check the dataset my changes are there....very frustrating Angry [:@]

    I can confirm that the stored procs work fine.  If I bind the same field to a grid column it saves, with exact same CreateDS and UpdateDS methods.

    Please help.

    The code is as follows:

    (There is a form with a textbox and a button)


    Imports System.Data.SqlClient

    Public Class Form1
        Dim m_cnn As SqlConnection
        Dim m_ds As DataSet
        Dim m_da As SqlDataAdapter
        Dim m_cmdScriptsSEL As SqlCommand
        Dim m_cmdScriptsINS As SqlCommand
        Dim m_cmdScriptsUP As SqlCommand
        Dim m_bnd As Binding

        Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
            m_cnn = New SqlConnection("Data Source=LAPTOP;Initial Catalog=dbScriptManager;" & _
            "Integrated Security=True")
            CreateDS()
            bindBox()
        End Sub

        Private Sub CreateDS()
            m_cmdScriptsSEL = New SqlCommand
            With m_cmdScriptsSEL
                .CommandType = CommandType.StoredProcedure
                .Connection = m_cnn
                .CommandText = "sp_ScriptsSEL"
                .Parameters.Add("@ScriptID", SqlDbType.BigInt, 0, "ScriptID")
                .Parameters("@ScriptID").Value = 1
            End With

            m_cmdScriptsINS = New SqlCommand
            With m_cmdScriptsINS
                .CommandType = CommandType.StoredProcedure
                .Connection = m_cnn
                .CommandText = "sp_ScriptsINS"
                .Parameters.Add("@Script_Desc", SqlDbType.VarChar, 50, "Script_Desc")
                .Parameters.Add("@Script_Txt", SqlDbType.Text, 255, "Script_Txt")
                .Parameters.Add("@NewScriptID", SqlDbType.BigInt, 0, "ScriptID")
                .Parameters.Item("@NewScriptID").Direction = ParameterDirection.Output
            End With

            m_cmdScriptsUP = New SqlCommand
            With m_cmdScriptsUP
                .CommandType = CommandType.StoredProcedure
                .Connection = m_cnn
                .CommandText = "sp_ScriptsUP"
                .Parameters.Add("@ScriptID", SqlDbType.BigInt, 0, "ScriptID")
                .Parameters.Add("@Script_Desc", SqlDbType.VarChar, 50, "Script_Desc")
                .Parameters.Add("@Script_Txt", SqlDbType.Text, 0, "Script_Txt")
            End With

            m_da = New SqlDataAdapter(m_cmdScriptsSEL))

            m_ds = New DataSet
            With m_da
                .UpdateCommand = m_cmdScriptsUP
                .InsertCommand = m_cmdScriptsINS
                .Fill(m_ds, "tblScripts")
            End With
        End Sub

        Private Sub bindBox()
            m_bnd = New Binding("Text", m_ds, "tblScripts.Script_Desc", True, DataSourceUpdateMode.OnPropertyChanged)
            TextBox1.DataBindings.Add(m_bnd)
        End Sub

        Private Sub UpdateDS()
            If m_ds.HasChanges Then
                m_da.Update(m_ds, "tblScripts")
            End If
        End Sub


        Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
            UpdateDS()
        End Sub
    End Class































































































  • 11 years ago
    If I check the parameters of m_da.updatecommand they are all null.  Do I need to do anything special when binding a textbox to a dataset and using stored procs in the dataadapter?

  • 11 years ago
    Problem solved.  You need to call the EndEdit of the datarow Stick out tongue [:P]

    i.e m_ds.Tables("tblScripts").Rows(0).EndEdit()



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