Asp.net - SQLLite Update Query Parameter Not Accepting System String Value?
Nov 29, 2011
I am having some issues with a parameterized SQL Lite query. I can't seem to get the SQL Lite Parameter to accept the String value
Using cmd As SQLiteCommand = pConn.CreateCommand()
If tblLang = "en" Then
cmd.CommandText = "UPDATE [AT_Strings] SET [Data] = @tblData + 1 WHERE [RecordID] = @ID AND [language] = @tblLang1"
Dim tblData As New SQLiteParameter("@tblData")
[code]....
The error is as follows....Unable to cast object of type 'System.String' to type 'System.Data.SQLite.SQLiteParameter'.Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidCastException: Unable to cast object of type 'System.String' to type 'System.Data.SQLite.SQLiteParameter'.
Source Error:
Line 283: Dim ID As New SQLiteParameter("@ID")
Line 284: Dim tblLang1 As New SQLiteParameter("@tblLang1")
I want to UPDATE query instead INSERT INTO using this code?
Dim cmd As New OleDbCommand("INSERT INTO tblPurchase_Order ([Order_Id],[Supplier_Id],[Address],[Project_Id],[dtpDate],[Material_Id],[Material_Name],[Unit],[Quantity],[Unit_Price],[Amount]) VALUES (@Order_Id,@Supplier_Id,@Address,@Project_Id,@dtpDate,@Material_Id,@Material_Name,@Unit,@Quantity,@Unit_Price,@Amount)", conn)
vb.net Private Sub UpdateLVItems(ByVal Index() As String) lvDrives.Items.Add(Index(1)) lvDrives.Items.Item(Index(0)).SubItems.Add(Index(2)) lvDrives.Items.Item(Index(0)).Tag = Index(1) End Sub
I am connecting to an Access database and using a parameter query with the LIKE operator to return all rows that match query. The string to search for is taken from a Textbox
sql =
"Select * FROM Allview WHERE Info Like" & "*" & CStr(TextBox1.Text) & "*" The query does not return any data in vb, but when run from access with same string, there is data returned.The connection to the database is done correctly, as I am able to return data with various other queries.
Partial code : Dim con As New OleDb.OleDbConnection[code]....
I am trying to run a query an Access db from VB. The general query which I want to run is
SELECT * FROM Patient WHERE Patient.PatientID = ? or SELECT * FROM Patient WHERE Patient.PatientLname = ?
I tried using an input box which captured the user input and pass that variable to the query, but that failed. Then I read about writing a function and using that, however, I keep getting an error which says Function not defined, but when stepping through the code, it seems to work. Here is my function: [Code]
I doing some maintenance work on a vb .net web app and receive a system.formatexception input string was not in a correct format error after I update a row from a GridView control. The database update returns fine and I've stepped through the code and it never throws an error but when execution finishes and returns to the browser I get the following. I turned on the feature to break when an exception occurs but it never does break. Any suggestions? [Code]
The reason this is being done is at this point we have no idea what the column contains.However, if the formatter is "{0:MM/dd/yyyy}" and the DataRow("ColumnINeed") is an integer containing 42, String.Format is returning: MM/dd/yyyy In this situation I need it to throw an exception instead of returning nonsense.Is there anyway to make String.Format throw an exception if the object does not match what the format string is expecting?
I am getting the following erro message: "Unable to cast object of type 'System.String' to type 'System.Predicate`1[System.String]'." on the line of code: If Not StrgFrag.Exists(wrd) Then I was expecting a True/False response and assumed it would work given that wrd is a String variables and StrgFrag in a List(of String). Do I need to reference the wrd variable differently? Dim StrgFrag As New List(Of String)
I wrote this code and i can populate result of query to combobox1.but i want to use parameter in my query and i want to range next combobox(such as combobox2) in attention to the selected item in combobox1.My sample databese name is test1 and has 3 field:categoryID,ParentID and Title.
How do I add a wildcard parameter to my query. Im using a mysql database. The following doesn't work:
Dim occCmd As New MySqlCommand("SELECT occupationid,descr FROM occupations WHERE lcase(descr) like '?descr%';", con) occCmd.Parameters.AddWithValue("?descr", prefixText)
Dim tbl as String = Request.QueryString("tb") 'tb value = User Dim sql As String = "Select * From @table Where @Col = @ColVal" Dim para As New SqlParameter
[Code]....
what should I do to run the sql with given table name as parameter and avoid the sql injection.
I'm stumped here - the folowing code errors with Procedure or function 'importsp_CreateDiallerBatch' expects parameter '@BatchName', which was not supplied[code]...
When debugging the code, BatchName definitely has a value, and checking the parameters collection of cmd right before executing the urey shows 2 params, both named and with values set exactly as expected. I must have written code like this a thousand times
I am trying to load a combo box based on a selection of data from another combo box. I am not sure how I would pass the value to the object. My thought is I am loading all the table data onto my object and then I would run the query on the object. However I am at loss as to how I would go about doing that.
Private Sub cboOrder_SelectedIndexChanged(ByVal sender As System.Object, ByVal e AsSystem.EventArgs) Handles cboOrder.SelectedIndexChanged Dim selecteditem As String
I have a query in a myTableAdapter that ends with WHERE column IN (@S). This works fine when I use myTableAdapter.Fill(dataset.table, "text") but I can't find any way that works to provide multiple text strings such as "text1, text2" for the IN parameter.
Dim conz As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:BdadosCV_PARTS.accdb;Persist Security Info=False") Dim cmd As New OleDbCommand("SELECT * FROM PECAS_IN WHERE Data >= ?", conz)
I am using following code to connect to my database. Dim conStr As String = "Data Source=.SQLEXPRESS; ![enter image description here][1] AttachDbFilename=|DataDirectory|dbTest.mdf; Integrated Security=True; User Instance=True" Dim sqlQry As String = "SELECT * FROM [tblTest] WHERE ([Name] = @Name)" Dim dAdt As New SqlDataAdapter(sqlQry, conStr) Dim dSet As New DataSet()
Then filling adapter with dAdt.Fill(dSet, "tblTest") And then I can use the data the way I want.
My question is: How to pass the value of parameter that user will give through a text box on my webform. Dim sqlQry As String = "SELECT * FROM [tblTest] <b>WHERE ([Name] = @Name) I mean how to pass the parameter value to my query?
I want to pass a date as parameter in vb to query the data from the table.If I hardcore the value in the query it works fine for me, but if I pass it as parameter to query, like I am getting the data from edit text and trying to send that as a parameter, this does not work.
SELECT * FROM VehicleAnalogParamDownload2 WHERE Vapd2_Date between 'From_date.Text' And 'To_Date.Text'
I have the following query... The only unique identifier i can use is the Primary Key (Access backend). I have a txt box on the form that displays this... I know this is not the best way to accomplish this. But my problem is the datatype here. This is my query:
I am now able to add a row to Table1 in my database and and to populate some text boxes with that data. Now...one of those text boxes has a piece of data I wish to use as a variable/parameter in a SQL query to then populate several other text boxes. The piece of data in question is the Primary Key in a Table2. I have tried several methods I've discovered online...but nothing is working so far. So far I'm leaning towards the CommandBuilder but am unable to make it work.
i would like to auto check for new version system update when the system is closing. When there is the new version system update, will automatically rename the active exe to FileName.old then copy new version of exe into the folder.
I am trying to prevent from having to escape apostrophes in my string variables by using a parameterized query with a OleDbConnection, but it is not working. I am trying to insert into an Access db and I keep getting those pesky html codes.
Dim pConn As New OleDb.OleDbConnection pConn = New OleDbConnection(cb.ConnectionString) Dim SqlString As String = "INSERT INTO Strings (Mlt_String_ID, Lng_ID, Strg_Name, Sht_Text, Lng_Text, Alt_Text) Values (@Mlt_String_ID,@Lng_ID,@Strg_Name,@Sht_Text,@Lng_Text,@Alt_Text)"
Unable to create a parameter query using the table adapter wizard to process an access db file. Went online and attempted to create an instance for new adapter with out success, when I click finish the wizard does not like the in the query WHERE (Last_Name LIKE @Last_Name). Also receive a warning that my code contains to many arguments for 'txtLastName.Text' Tried to paste screen
Public Class FindMemberForm Private Sub FindMemberForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
I'm using a datagridview to display data and make updates to my access database. I was able to display data from my database to the datagridview but it is not filtered. The datagridview displays all the records on my database. I tried using query builder to execute sql select statements that will filter the data and this is where I'm stuck. Im using a variable as a parameter to the sql statement and I dont know what syntax to use in Query Builder. I tried to use @varname, '" & varname & "', and
how to pass a parameter to a predefined parameter in a dataset. I've found everywhere a solution if you build the sqldata adapter and the dataset in the code. Then you can pass the parameter like: da.SelectCommand.Parameters.Add("@param1", SqlDbType.Char).Value = param1_variable (as example)
But if you have builded a dataset (with table adapters), and then in the form app you want just to pass the param1 to a DataGridView1 (as example) which is using the table adapter, I did not find how to do this.
