I have been looking for a way to convert C# datatype into database specific type of MS SQL. For example when I do [Code]....
I would get System.GUID or something like that but what I want is UniqueIdentifier instead of System.GUID. In most cases, I would also want the length of the type like varchar(1000) and stuff like that. Is there anyway I could convert or get similiar result ?
convert below datetime value which is as varchar datatype to another datetimeformat as varcharchar datatype
2010-05-19T13:05:08.6Z
I was unable to read any Interger8 datatype in AD. For example, "lockoutTime" in User object in the Directory. I was just always got System.Runtime type and unable to cast to any other readable type.I was also using Active Directory Explorer to see this property in the AD. I saw the property schema is defined as "Integer8".Does anyone who know how to read this data out? I was trying a lot of time and still failed.
View 1 Replieshow would one go about converting a string to an SQL time data type? Lets say i wanted to convert @param1 to SQL time and @param2 to SQL date.
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I am getting an error on the return saying
Error 18 Cannot convert method group 'ToList' to non-delegate type System.Collections.Generic.List<string>'. Did you intend to invoke the method?
I have a SQL which is running good at SQL Server Mgm studio:
"select d.EmployeeID, CONVERT(VARCHAR(10),d.LogTime,111) as Date1, MIN(CONVERT(VARCHAR(8), d.LogTime, 108)) as FirstIn
from LogTable d where d.dwStatus=0 group by d.EmployeeID, CONVERT(VARCHAR(10), d.LogTime,111)"
However, When i put it into my code (Entity SQL):
"select d.EmployeeID, CONVERT(VARCHAR(10),d.LogTime,111) as Date1, MIN(CONVERT(VARCHAR(8), d.LogTime, 108)) as FirstIn
from IGPSiteEntities.AccessLogSet AS d where d.dwStatus=0 group by d.EmployeeID, CONVERT(VARCHAR(10), d.LogTime,111)"
I got error :
'CONVERT' cannot be resolved into a valid type of function. Near simple identifier, line1, column 200.
LogTime is a DateTime format e.g 05/05/2010 14:12:12
I want to select ONLY the Date (e.g 05/05/2010) and select ONLY the time (e.g 14:12:12) so i use CONVERT function.
I added a button click event to my project as:
But since this i am getting this error saying:
Cannot implicitly convert type 'string' to 'System.Web.UI.WebControls.TextBox
There seems to be no error in my code.
I am getting error "Cannot implicitly convert type 'string' to 'System.Data.DbType".
When I am passing Stored procedure parameter it expets 'System.Data.DbType" and the Data member is declared as a string.
i have set the type of a column in a table numeric(6,2) but when i insert a value above 9999,99 i get the error
"Arithmetic overflow error converting numeric to data type numeric."
Do you know whats wrong??
ofc thats all through visual studio for an asp site thats why im posting here
I want to store value like 01,02,03 in database but whenver i do so the database transfor those figures into 1,2,3. The field is Int Type.
View 4 RepliesI am selecting time from dropdownlist. and want to convert it in datetime and store it in database. When I am converting it to Datetime using following statement.
DateTime start_Time = Convert.ToDateTime(start_ts);
but it is showing as : date:12:00:00AM
How do we convert, the following code to query a SQL database with ASP using a DSN-less connection
[Code]....
I have a dBA who designed a table with a gender field, which the value can only be M or F. He designed the gender field as binary(1).
View 6 RepliesI have a variable in the database "Amount". Data type is a float, but if I write 10.00, save 10 This is not good.
I want to save the database 10,00, and not 10.
I have been in the process of updating my code with security methods, and I've been learning this from [URL] (or "Security Guidelines: ASP.NET 2.0"). In the middle of the page under "When Constructing SQL Queries, Use Type Safe SQL Parameters" it says "Use type safe parameters when constructing SQL queries to avoid possible SQL injection attacks that can occur with unfiltered input". Now, what they suggested was to use code like:
"DataSet userDataset = new DataSet();
SqlDataAdapter myCommand = new SqlDataAdapter(LoginStoredProcedure", connection);
myCommand.SelectCommand.CommandType = CommandType.StoredProcedure;
myCommand.SelectCommand.Parameters.Add("@au_id", SqlDbType.VarChar, 11);........"
But, I was already using code like:
"var dataSource = (SqlDataSource)form1.FindControl("sqlDataSource5") ;
dataSource.UpdateParameters.Add("someVal", val);"
So now, to use type safe parameters, I decided to include it like:
"var dataSource = (SqlDataSource)form1.FindControl("sqlDataSource5") ;
dataSource.UpdateParameters.Add("@someVal", DbType.Int16, val);
dataSource.UpdateParameters["@someVal"].Size = 1;"
So, that would be how I would modify my current code base to use type safe parameters in sql updating/inserting.
Getting to my actual question, as it was said "Use type safe parameters when constructing SQL queries to avoid possible SQL injection attacks that can occur with unfiltered input". First off, this suggests that this should apply to unfiltered input. Also, in their example they only did this for an ID.
So, what I'd like to know, when it comes to "unfiltered input", does this mean as long as the input is unfiltered I must use type safe parameters, or even filtered input shall have this (just to be sure), like, input that has been ran through a regularexpression check? Shall I do this for all values I insert/update into the database, or just IDs and important things?
The way I see it right now is that it would be a good precaution to just do type safe checks on everything (literally) that updates/inserts into the database just to be extra safe. But, I really am unsure if this is really the best idea, because if I did, would this possibly cause overprocessing of information? Can this cause too much strain on server resources? If my fears serve true, what would be a good suggestion of how I could implement this properly without having to worry about what I said?
Yes..i know this is ASP.NEt forums but the SQL server doubt i will be going to ask is related to ASP.NET
I have a table 'a' in my database where i store User information - each time they visit the website a new record is added
so in a high traffic website - the information will be collectively huge(i dont care about this as i have too much of disk space)
but the problem here is with the primary key - I want a datatype of the primary key which should never end Bigint can store some zillions of records but it finally ends... how will i be able to accomplish it.
I'm using DAAB from MS Ent Library 4.1. I have this function in my DAL that returns a dataset.
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However, it is failing with this error:Failed to convert parameter value from a String to a Boolean.
But if I use SqlDbType.VarChar instead it works fine. I want to use Char b/c that is the correct datatype in SQL.In my SP the param is @CUSTNMBR char(15). In my database table the field is also char(15).
I have a column in sybase database with image datatype which stores some message information. I want to convert back to text when presented to the user. how do I do it in the Client side? if someone has any suggestion or related code.
View 5 RepliesI want to filter by database result based on the current date. I have a grid layout which will display the result based on the current date. I am using parameterized query for getting the result but it is not working.given below is the query i am using
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT TestID, Title, Description FROM aspnet_Test WHERE (Date
=@testdate)">
<SelectParameters>
<asp:Parameter Name="testdate" DbType="Date" />
</SelectParameters>
</asp:SqlDataSource>
and the result should filter on the basis of testdate
String testday, testmonth, testyear,testdate;
testday = System.DateTime.Now.Day.ToString();
testmonth = System.DateTime.Now.Month.ToString();
testyear = System.DateTime.Now.Year.ToString();
testdate.Text = testyear.ToString() + "-" + testmonth.ToString() + "-" + testday.ToString();
but this is not working .It is not showing any error but i am not getting any output.
i want to export my excel data to sql server.
The excel data contain
1) id 1,2,3,4.5 which is int type
2) name abhi,soni which of varchar type
3) percentage 40.1,50.1,62.5 which is of type decimal
i wrote an application that will export data to existing sql server table
now what i want is to analyse excel data and then determine the type of data and then create a table with the analyse datatype and then export.
I've inherited a SQL Server 2005 table where there are several colums of the image datatype. I'd like to extract all of those images and save them as files to a folder. How can I do this using VB.NET?
Brian
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 am using SQL SERVER 2008 database. I have a table Customers in which the CustomerID column is had datatype INT intially but due to increase in Customers the number range is exceeding which may cause error arithmetic overflow of data. Hence I thought to modify the datatype from INT to BIGINT and wrote an alter script but when I ran the script it failed. Hence provide me in creating alter script for the updating the datatype of the primarykey column for the Customers table.
View 2 RepliesIn of my application I am using the database to store and retrive images. The table stores the documents and the datatype of the field is IMage.
Now with Sql Server 2008, i would like to upgrade this to use this new feature. WHat changes do I have to make in terms of code and also in the database.
I have this error "The given value of type String from the data source cannot be converted to type datetime of the specified target column." when I used sqlbulkcopy to do the transaction
Here is my code:
[code]....