error in get parameter from storeprocedure in asp.net

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hi anyone can answer to me ? I want send one parameter to my stored procedure that is in my database.PLEASE HELP ME
i wrote following codes:

C#

    string aname = TextBox1.Text; 
    SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=NezamPezeshki;Integrated Security=True");

        
    SqlCommand cmd = new SqlCommand("InsertActionType", con);
    cmd.CommandType =CommandType .StoredProcedure ;
    cmd.Parameters.Add("@Aname", SqlDbType.VarChar) = aname ;
        
    SqlDataAdapter  ad=new SqlDataAdapter (cmd);
    DataSet ds=new DataSet ();
        
    con.Open();
    int rows = cmd.ExecuteNonQuery();
    con .Close ();
}

but i recieve 2 error
Error 1 The left-hand side of an assignment must be a variable, property or indexer C:\Documents and Settings\abarsazan.co\My Documents\Visual Studio 2005\WebSites\WebSite12\Default.aspx.cs 24 9 C:\...\WebSite12\
Error 2 Cannot implicitly convert type 'string' to 'System.Data.SqlClient.SqlParameter' C:\Documents and Settings\abarsazan.co\My Documents\Visual Studio 2005\WebSites\WebSite12\Default.aspx.cs 24 59 C:\...\WebSite12\

Posted 7-Jul-12 18:36pm

veusk

Updated 7-Jul-12 18:39pm

SoMad

v2

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Karthik. A · Accepted Answer · 2012-07-07T18:49:00

Change the following line

C#

cmd.Parameters.Add("@Aname", SqlDbType.VarChar) = aname ;

to

C#

cmd.Parameters.Add("@Aname", SqlDbType.VarChar);
cmd.Parameters["@Aname"].Value = aname;

(or)

C#

cmd.Parameters.Add("@Aname", SqlDbType.VarChar).Value = aname;

First you have to add the parameter and specify the type of parameter and then assign a value to that parameter.

Refer this link http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlcommand.parameters.aspx[^] for more information.