CODEWITHSUNDEEP
sqlvb.netado.net
themoonchild
themoonchild

Reputation: 21

Convert 'String' to 'SQlCommand' in vb.net

I am a novice vb programmer. I am sure it's simple but I can't get it right.

Value of type 'String' cannot be converted to 'SQLCommand'

It is the error.

Public Sub InsertPackageDetails(ByVal PackageName As String, ByVal PackageDescription As String, ByVal DateOfInstallation As DateTime, ByVal ImportPackageStatus As String)
    Dim SQL As String = "Insert into PackageInstallation(PackageName,PackageDescription,DateOfInstallation,ImportPackageStatus) values('" + PackageName + "','" + PackageDescription + "','" + DateOfInstallation + "'," + ImportPackageStatus + ") "
    DBHelper2.ExecuteNonQuery(SQL)
End Sub

How can I convert SQL which is the string to SQLCommand? I appreciate the help.

Upvotes: 0

Views: 812

Answers (1)

Mary
Mary

Reputation: 15101

You can see the various ways to create a command here. https://learn.microsoft.com/en-us/dotnet/api/system.data.sqlclient.sqlcommand.-ctor?view=dotnet-plat-ext-3.1

You should use Using...End Using blocks so that your connection and command will be closed and disposed but you will need to have these objects in the local method where they are used.

I had to guess at the type and size of your fields in the database. Check in the database and correct the code accordingly.

Public Sub InsertPackageDetails(ByVal PackageName As String, ByVal PackageDescription As String, ByVal DateOfInstallation As DateTime, ByVal ImportPackageStatus As String)
    Dim SQL As String = "Insert into PackageInstallation(PackageName,PackageDescription,DateOfInstallation,ImportPackageStatus) 
                          Values(@PackageName, @PackageDescription, @DateOfInstallation, @ImportPackageStatus;"
    Using cn As New SqlConnection("Your connection string"),
            cmd As New SqlCommand(SQL, cn)
        With cmd.Parameters
            .Add("@PackageName", SqlDbType.VarChar, 100).Value = PackageName
            .Add("@PackageDescription", SqlDbType.VarChar, 100).Value = PackageDescription
            .Add("@DateOfInstallation", SqlDbType.DateTime).Value = DateOfInstallation
            .Add("@ImportPackageStatus", SqlDbType.VarChar, 100).Value = ImportPackageStatus
        End With
        cn.Open()
        cmd.ExecuteNonQuery()
    End Using
End Sub

Upvotes: 2

Related Questions