ADO.NET :: Find The DataType MisMatch Row In DataTable?
Jan 11, 2011[Code]....
How find the DataType MisMatch Row In DataTable.
[Code]....
How find the DataType MisMatch Row In DataTable.
How to get Column Data Type in Autogenerated Grid View ?
View 1 RepliesI'm loading data from my database into a DataTable, and one of the columns is a date field.
[Code]....
I'd like to format that column so that instead of containing a full date, it will be formatted like "MM/DD/YYYY".
I've tried looping through each row in the table and changing the cell for that column, but I get an error saying that the string isn't a valid DateTime object.
I tried changing the column DateType to a string, but I get an error saying I can't change the DateType after the table is filled.
How can I do this? This seems like such a simple thing, but I'm having so much trouble with it.
I am using VS 2008.I am building a datatable of records to be inserted into a SQL Server 2005 table.
The program loops through this table and builds a SqlParameter for each DataColumn in the datatable. The SqlParameters are used in the SQL Insert statement.
The field I am having a problem with is of type 'bit' in the database table and has no default value and cannot be nulls. The field is called 'Active' The meaning of this field in the application is Boolean i.e True or False. When inserting the record, I wish to default the field to "False".
When I define the columns in the datatable I am forced to use the following code to build the datatcolumn containing the boolean field i.e. dtcActive.DataType = GetType(Boolean) as there is no GetType(Bit)
Dim dtcActive As New DataColumn("Active")
dtcActive.DataType = GetType(Boolean)
dtcActive.Unique = False
dtcActive.AllowDBNull = False
dtcActive.DefaultValue = False
dtProviderDayDetails.Columns.Add(dtcActive)
However, when I build the SqlParameter I am forced to use this:
If field.ColumnName = "Active" Then
prm.SqlDbType = SqlDbType.Bit
prm.Value = "False"
End If
This is because there is no SqlDbType.Boolean. The problem I have is there is no value I have been able to give the SqlParameter that is accepted by the Insert statement. It complains that the boolean field cannot be null on Insert.
I have a DataTable of available time slots. I have another DataTable of reserved time slots. I need to remove from the list of available slots the ones that have been reserved. The blocks are in 15 minute increments, but one of my problems is that the reservation can be longer than 15 minutes. I've had some luck removing one or two, but not all of the required columns.
Here's my code (it doesn't work right now).
[Code]....
i am store ms word resume to image(BLOB) data type in sql server 2005. now i want to display this resume in HTML page or in text area. and for that i use
[code]....
convert below datetime value which is as varchar datatype to another datetimeformat as varcharchar datatype
2010-05-19T13:05:08.6Z
There has to be an easy answer:I want to loop through multiple datatables... example:
for (int i = 1 ; i < 7 ; i ++ )
{
DataTable dt = (DataTable) "dt" + i.toString();
// do something with DataTable dt1 as DataTable
// ie...
int x = dt.Rows.Count
}
The above code obviously does not work.. but how do you find a DataTable like you do FindControl with WebControls??
I have a data table say i have a column like x which is primary key so i should get the row where this x values in empty.
View 2 RepliesI have a DataTable for which a PrimaryKey constraint has been set to be a combination of an integer column and a datetime column. When I try to 'Find' a row by saying,
dtFunds.Rows.Find(iContainerIndex)
I get a null value. iContainerIndex has been defined as an object array of size 2 with the integer ID and date values in it.
When I set a breakpoint in my code, I see that the very same values are present in the datatable.
If I try to execute, DataTable.Select() method with the integer column filter, I get a result - but returns no result when called with the date column filter.
What am I doing wrong here? The very same DateTime value is present in the datatable.
As I iterate through a DataTable object, I need to check each of its DataRow objects against the items in a generic string List. I found a blog post using the List's Find method along with a delegate, but whereas that example has a separate class (Person), I'm attempting something like the following using an instance of the string object:
// My definition of the List object.
List<string> lstAccountNumbers = new List<string>();
...
// I populate the List via its Add method.
...
foreach (DataRow drCurrentRow in dtMyDataTable.Rows)
{
if (lstAccounts.Find(delegate(string sAccountNumber) { return sAccountNumber == drCurrentRow["AccountNumber"]; })
{
Found_DoSomething();
}
else
{
NotFound_DoSomethingElse();
}
}
However, with this syntax I'm receiving "Cannot implicitly convert type 'string' to 'bool'" for the if block. what I'm doing wrong and how best to accomplish what I'm trying to do?
I have made a custom DataTable
Dim dt As New DataTable("RizPardakht")
Dim RowID As New DataColumn("tbz_GatiPardakhtID")
Dim FishNo As New DataColumn("tbz_FishNo")
[code]...
I'm kind of new to asp.net and am bad at translating stack traces. While workign on the above function in my web services I've seem to have run into a problem. I can connect to services which return static values. But when I try to connect to a service method that accesses the database I get the following error message:
View 1 Replies'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'
View 3 RepliesI am using C# windows based GUI and MS-Access as my database. Unfortunately, I cannot insert a record with a numeric value, this means that one of my field is a number data type. Below is my code;
Code:
strItemCode = lvProducts.Items[i].SubItems[0].Text.Trim();
iQty = int.Parse(lvProducts.Items[i].SubItems[2].Text);
cmAdjustedItems.CommandText = "INSERT INTO tblAdjustedItems VALUES(@itemcode, @adjustmentid, @qty)";
cmAdjustedItems.Parameters.AddWithValue("@itemcode", strItemCode);
cmAdjustedItems.Parameters.AddWithValue("@adjustmentid", strAdjustmentID);
cmAdjustedItems.Parameters.AddWithValue("@qty", iQty);
cmAdjustedItems.ExecuteNonQuery();
All the variables in my code were properly declared.
I'm using Linq to Sql to call some stored procedures for more complex work; is there any way Linq to Sql can tell me when the output columns from the stored procedure do not match the properties of my entity object? It seems that Linq to Sql tries its best to match the columns and ignores any mismatches.
View 8 RepliesI'm currently developing a website that shows multiple charts that I build using data from SQL tables. I've used and followed Scott Mitchell's tutorial [URL] and K. Scott Allen's ChartBuilder class [URL] and all works well.
However when have two series that I want to show on the same Chart, if one set of data does not have all of the X values the other series does, the chart blindly puts all the data on, ignoring trying to match the X values of the other series, therefore mismatching the X values when the chart is shown.
I know that I can fiddle the data so that both sets of data have the same X values, however I'm trying to make the class handle anomalies in the data so that I don't have to worry too much about the data.
Whats The wrong With This Code
Data type mismatch in criteria expression
Public Class Class1
Dim str As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Documents and SettingsMasterMindsMy DocumentsVisual Studio 2008ProjectsWebApplication1WebApplication1indb1.mdb"
Dim con As New OleDb.OleDbConnection(str)
Public Sub insert(ByVal Nationalty As String, ByVal NationalID As Single, ByVal StNameA As String, ByVal Gender As String, ByVal BirthDate As Date, ByVal Address As String, ByVal TawjehiAvg As Integer, ByVal alfera As String, ByVal Phone As Integer, ByVal
Specialization As String, ByVal Period As String)
If con.State = ConnectionState.Closed Then
con.Open()
End If
Dim adp As New OleDb.OleDbCommand("insert into stinfo values (" & getmaxid() & ",'" & Nationalty & "'," & NationalID & ",'" & StNameA & "','" & Gender & "','" & BirthDate & "','" & Address & "'," & TawjehiAvg & ",'" & alfera & "'," & Phone & ",'" &
Specialization & "','" & Period & "')", con)
adp.ExecuteNonQuery()
con.Close()
End Sub
Public Function getmaxid() As Integer
Dim z As Integer = 1
If con.State = ConnectionState.Closed Then
con.Open()
End If
Dim adp As New OleDb.OleDbCommand("select max(Stnum) from stinfo", con)
Try
z = adp.ExecuteScalar
Return z + 1
Catch ex As Exception
Return z
End Try
End Function
Dim x As New Class1
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
x.insert(DropDownList5.Text, TextBox1.Text, TextBox2.Text, DropDownList1.Text, TextBox5.Text, TextBox6.Text, TextBox7.Text, TextBox8.Text, TextBox9.Text, DropDownList3.Text, DropDownList4.Text)
End Sub
I am importing data from an Excel worksheet. The columns are labelled aa, ab, ac .... in row1 and the rows are labelled with integers in col aa. Although I can import the entire worksheet (so long as it isn't too big), when I add a WHERE clause to import only a single row I get a type mismatch which I have not been able to isolate. How can I make progress.
Protected Function SetsConnection(ByVal n_cust As Integer) As OleDbCommand
'
' Create the connection string for the EXCEL file containing the filename and Provider settings.
'
Dim rope As String
[Code]....
I'm trying to make a search that would list results in an access database which is newer than the date given in the textbox. When i run my sql query and it tries to fill the dataset, i get that data type mismatch error. This is the exact error:
Data type mismatch in criteria expression.
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.Data.OleDb.OleDbException: Data type mismatch in criteria expression.
Source Error:
Line 176: OleDbConnection MyConn = new OleDbConnection(ConfigurationSettings.AppSettings["strConn"]);//Luodaan yhteys
Line 177: objCommand = new OleDbDataAdapter(strSQL, MyConn);
Line 178: objCommand.Fill(DataSet1, "Testi"); //Täytetään dataset (fill on DataAdapterin komento), "Testi" on datatablen nimi
Line 179: DataSet1.Tables["Testi"].Columns[0].ReadOnly = true; //Asetetaan ID sarake vain-luku muotoon, ettei avainta pääse muuttamaan
Line 180: DataGrid1.DataSource=DataSet1.Tables["Testi"].DefaultView; //Asetetaan DataSourceksi Datasetin datatable "Testi" johon tiedot on haettu
Source File: c:inetpubwwwrootphoenixsearch.aspx.cs Line: 178
In the access database the date field is of datetime type. The dates are in european DD.MM.YYYY format which i transform using datetime variable and convert function. The sql query runs fine in access database but when i run it thru my oledb connection in my asp.net page it gives me errors. How should i modify my query, or make adjustments to my code, to not get this error? Do i need to send the datetime as a parameter? And how do i do that? Here is the code for the search event:
[Code]....
ASP.NET 3.5I'm very confused. After inserting a record into a formview, I want to go back to readonly mode. However I need to enable a button in the ItemTemplate as well.I put my code in the ItemCreated event (tried ModeChanged event as well) as below:
If formview.currentmode = FormViewMode.ReadOnly and inprocess then
ormView.Row.FindControl("NextImageButton").Visible = True
end if
Although currentmode is ReadOnly, FormView.Row still seems to contain the EditItemTemplate (combined template for inserts and edits) controls, not the Itemtemplate controls. This seems totally wrong to me - can someone confirm?
[Code]....
<%@ Page Language="VB" AutoEventWireup="true" Debug="true" %>
I am getting a "Data type mismatch in criteria expression" error when trying the following SELECT statement. strdt and spdate are Date types in my vb codebehind and the Contract field name is a DateTime field.
Dim
nmxSQL As
String =
"SELECT * FROM Nymex WHERE (NymexID='" & nymID &
"' And Contract>='" & strdt &
"' And Contract<='" & spdate &
"')"
I have used the repeater function in an aspx page to create a discussion/fourm style page where user can posts comments, but when I try and write a comment I get this error; Data type mismatch in criteria expression. The user gets to the discussion page from a link in a gridview so that it displays all the posts on the specific film, and the correct posts come up, its just when a user wants to post something themsevles I get the error.This is the code in the discussion.aspx.vb page
Protected
Sub Page_Load(ByVal sender
As
[code]...
In ultrawebgrid when column data is large then it(data) comes to nearest coumn data then the mismatch. i have set all the property like width,AllowColSizingDefault="Free",SelectTypeRowDefault="Extended"
Ultra web grid code:
<igtbl:UltraWebGrid ID="UwgUsageDetails" runat="server" Height="287px" Width="100%">
<Bands>
<igtbl:UltraGridBand>
<Columns>
[Code]....