Get Primary key value in gridview on edit command

Step 1: Create a form and put div that contain questionid and question description style="Display:none", to get question id.

Step 2: Put the following code on rowcommand of gridview

protected void GridView1_RowCommand1(object sender, GridViewCommandEventArgs e)

        {

            if (e.CommandName.Equals("edits"))

            {

                int index = Convert.ToInt32(e.CommandArgument.ToString());

                int ServerID = Convert.ToInt32(GridView1.DataKeys[index].Value);

                TxtQuestionId.Text = ServerID.ToString();

                SqlConnection mycon = new SqlConnection(connectionstring);

                SqlCommand mycmd = new SqlCommand("select * from QuestionMaster where                                                             QuestionId='"+TxtQuestionId.Text+"'", mycon);

                mycon.Open();

                SqlDataAdapter myadpt = new SqlDataAdapter(mycmd);

                DataSet ds = new DataSet();

                myadpt.Fill(ds);

                ddCourse.SelectedValue = ds.Tables[0].Rows[0]["CourseId"].ToString();

                ddTopic.SelectedValue = ds.Tables[0].Rows[0]["TopicId"].ToString();

                TxtQuestion.Text = ds.Tables[0].Rows[0]["Question"].ToString();

      }

//To hide particular cell from Grid View 

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

        {

            e.Row.Cells[1].Visible = false;

        }

Step 3: And at last put the following code on submit button click

 protected void Button1_Click(object sender, EventArgs e)

        {

            SqlConnection mycon = new SqlConnection(connectionstring);

            SqlCommand mycmd = new SqlCommand("UpdateQuestionMaster", mycon);

            mycmd.CommandType = CommandType.StoredProcedure;

            mycmd.Parameters.Add("@CourseId", SqlDbType.Int).Value = ddCourse.SelectedValue;

            mycmd.Parameters.Add("@TopicId", SqlDbType.Int).Value = ddTopic.SelectedValue;

            mycmd.Parameters.Add("@Questiondescription", SqlDbType.NVarChar).Value = TxtQuestionDes.Text;

            mycmd.Parameters.Add("@Question", SqlDbType.NVarChar).Value = TxtQuestion.Text;

            mycmd.Parameters.Add("@QuestionId", SqlDbType.Int).Value = TxtQuestionId.Text;

            mycon.Open();

            mycmd.ExecuteNonQuery();

        }

Also see my other blogs: Reset Table id to zero in sql server

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