how to search the datagridview content using textbox and serach button in C#

i agree with S Mewara
Filter teh datasource of the datagrid on click of the search button using the text in the textbox and rebind the datasource to the grid

hello Tushar..
You can try this..

In the button click event(private void button1_Click(object sender, EventArgs e)) you can create a datatable or dataset in which you can pass the query to find the data from the database and reflect the data in the datagridview.

code will be like this..

private void button1_Click(object sender, EventArgs e)//button click event
{
   DataTable dt= new DataTable;//creation of datatable which will be reflected in                         
                               //the datagrid view
   SqlDataAdapter adpt = new SqlDataAdapter("Select <field> from <table> where <field> like '" + textbox.Text + "%'",connectionobject); //query for database
   adpt.Fill(dt);//datatable to catch the fields from the database
   datagridview.DataSource = dt;
}</field></table></field>

at the first time you must bind your datagridview with sqldataadapter
after that call a function that have this query

"select * from table where user_name='"+textbox.text+"'"
and bind your datagridview with this query.
if you can not understand tel to me to do it completly