c# intellisense search bar for use with datagrid

If you're  using  a  data  base  you  can  define a stored procedure and use the sql keyword like, if you use sql server for example

CREATE PROCEDURE Search  @letter Char
AS
Select  [something here] from [something here] where [your targeted field] like @letter
GO
Then create a connection to your data base
create a command

sqlCommand oCommand = new sqlCommand("Search");//Remarque that we use the name of the stored procedure
oCommand .CommandType = CommandType.StoredProcedure;

//Now create an sql param
sqlParameter myParam = new sqmParameter("@letter", sqlDBtype.Char);
myParam.Value = textbox.text;
oCommand.Parameters.add(myParam);
//now create a data set to stock data wirth
DataSet ds = new DataSet();
//An sqldataadapter to fill the dataset
sqlDataAdapter oAdapter = new sqlDataAdapter(oCommand);
//Fill the data into data set
oAdapter.Fill(ds);
//Now tie your control to the dataset

dataGridview.dataset = ds;
dataGrifView.datamember = ds.Tables[0].TableName

try it