C# - Query Filter Design For String Field?
Jun 14, 2010
A field in my table can have arbitrary strings. On the UI, there is a drop down having options like
All, Value1, Value2
And the results were filtered by the selected option value. So far this is easy and adding new filters to the UI is not a problem. Needs no changes in my stored procedure. Now I want to have an "Others" option here as well, which will return rows not having the column value as Value1 or Value2.
Apparently this will require a "not in" operator in my query, and will make maintenance difficult, as the list of values is likely to change
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Aug 17, 2010
How can I replace the field names in sql query string with variables like:-
string field1="ID";
string field2="Name";
sql = "Insert into [Sheet1$] ('" + field1 + "','" + field2 + "') values('1','abc')";
I am inserting data into an Excel document which has got nearly 100 columns.
I am inserting data using OLEDB as follows:-
System.Data.OleDb.OleDbConnection MyConnection ;
System.Data.OleDb.OleDbCommand myCommand = new System.Data.OleDb.OleDbCommand();
string sql = null;
MyConnection = new System.Data.OleDb.OleDbConnection(connectionstring);
MyConnection.Open();
myCommand.Connection = MyConnection;
sql = "Insert into [Sheet1$] (ID,Name) values('1','abc')";
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myCommand.ExecuteNonQuery();
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I want to specify the field names at runtime as mentioned above - sql = "Insert into [Sheet1$] ('" + field1 + "','" + field2 + "') values('1','abc')"; When I try this I am getting error.
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Jul 11, 2010
I am trying to update my table ARTICLES and it has a field COUNTER, Everytime a user enter this ARTICLES, the page_load event runs a LINQ to SQL query taking the QueryString as parameter, increasing the COUNTER field in 1.
[Code]....
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Oct 24, 2010
how to pick a specific field (besides Primarykey field ) through HQL query ???
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Feb 17, 2011
I need to filter LINQ query using comboboxes and textboxes. The problem is I can't manage to get the result and I always get the empty gridview (used for showing filtered data). Can anyone help me why am I getting no results at all? I've checked the debugger and the data sent to query is valid, although, I'm not sure about "string.Empty" value.
string naziv, nazivEn, adresa, tel, fax, mob, email, web, oib, tip, mjesto;
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{
mjesto = cbMjesto.SelectedItem.Text;
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[code]....
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Aug 31, 2010
I am using and EntityDateSource and I add where condition to filter the data at runtime and then bind the grid to the dataSource, but I am getting following error:-
The argument types 'Edm.DateTime' and 'Edm.String' are incompatible for this operation.
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Nov 22, 2010
Example:
[URL]
I added the iis tag because I am guessing it also depends on what server technology you use?
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Oct 5, 2010
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May 11, 2010
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May 16, 2010
I want to filter a datetime field for a date without the time...
I want all fields that contain the selected date regardless of the time.
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Nov 16, 2010
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Dec 24, 2010
I m facing some problem. i m not passing Dynamic string through query string..
I m using this code
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Dec 7, 2010
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May 28, 2010
I have a simple ASP.net page:
<form id="form1" runat="server">
<p><asp:TextBox id="input_box" runat="server"></asp:TextBox>
<asp:Button Text="OK" runat="server" OnClick="run" /></p>
</form>
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That's the code behind page:
protected void Page_Load(object sender, EventArgs e)
{
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protected void run(object sender, EventArgs e)
{
string url = string.Format("?input={0}", input_box.Text);
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}
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Jan 5, 2011
We are sending an HTML encoded string in the Query string. It was working fine on IIS 6 (windows 2003). We have recently moved the website to Windows 2008 (IIS 7.x). Since the move any Query String that contains "+" sign i.e., "%2b" gives error on the server "404 -File or directory not found."
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Apr 12, 2012
I tried to filter the data table and order by the records based on ID.
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Mar 3, 2011
I would like to know how to make String Type Range FilterasProductId Between '001' and '004'
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Jan 15, 2011
I wanted to create a URL like http://localhost/menu.aspx/?id so that on typing this, it displays all the id's in the database. for eg:134
123
543
234
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Feb 14, 2011
Here is idea i have 6 different fields to allow search if i give the option for user to enter value in any of 6 option or enter combined fields how to use sql query to retrieve the value.
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Mar 17, 2010
I have a gridview that displays the results of a SELECT * from a SqlDataSource. Works great. However one of the fields is a Unique ID linking to another table.
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Jan 2, 2011
i am work with linq to sql,i have a table called News,and its class in linq to sql is New
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// default value for Counter Field is 0
[Code]....
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Dec 24, 2010
I want to fetch date from a datetime field, when i select this field in database i get the result as 'yyyy-mm-dd hh:mm:ss' i want the result to be like dd/mm/yyyy
I am developing website using ASP.net C# using Mysql.query i have made is:
//***to get next date
string nextdatequery = "SELECT next_dt
FROM testcase.heardt where fil_no=?
and next_dt>?;";
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Sep 3, 2010
I have three tables in my sql database
contacts
survey answers
respondent_initial
Contacts holds all customer data with custid.
survey answers has assigned everyone how took the survey a number in a field called
respondent_no.
respondent_initial holds input from a webform where I populated it with the custid from contacts and respondent_no from survey answers before the webform input is inserted.I want to send an email to them that had there respondent_no in a hyperlink to the webform so that when they entered their data into the webform it would use the repondent_no to determine where to insert the form data.
Example joe clicks http://www.myplace.com/order.aspx?23
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// Create command
comm = new SqlCommand("INSERT INTO respondent_inital (Practice_Name, Address1, Address2, City, State, Zipcode, Phone, Email, Contact, Dealer, item_9223, item_9129, item_42795, item_30695, item_42834) VALUES (@Practice_Name, @Address1, @Address2, [code]....
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Sep 7, 2010
I want to access the data from datatable object. When i trying to get the fieldslist usng "Field" method. But I could not find the method with my table object. Eventhoguh i forcibly write a method and trying to access the fields, It is giving the below error for the first join in query. Rest of the lines are fine.
What is the reason behind it.
The errro: "Error 2 'LINQ2DB.SP_VS_OP' does not contain a definition for 'Field' and the best extension method overload 'System.Data.DataRowExtensions.Field<T>(System.Data.DataRow, string)' has some invalid arguments"
What is the meaningof the error. Shall i do any other changes in the query line?
var QueryChnl = from oSPOP in SPOP.AsEnumerable()
join oDiscChannel in DiscChannel.AsEnumerable() on oSPOP.Field<int>("spid") equals oDiscChannel.Field<int>("SPID")
join oChannel in Channel.AsEnumerable() on oDiscChannel.Field<int>("channel") equals oChannel.Field<int>("channelID")
where oSPOP.Mappingkey == 3200004
select new { oSPOP.Mappingkey, oChannel.channel, oDiscChannel.STATUS };
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