Regd.NicEdit Content Save into Sql Database

Question

                    Hi I am Using Nicedit My WebApplication..It is Nice. 

Normally I am using On Save Button for Content Save to Database using Query. I am using Textbox after nicedit it converted as TextArea.

Now I Dont Know how get text's from TextBox means Textarea..

becoz i am using the Code is..

protected void lbtnSave_Click(object sender, EventArgs e) {

        divMsg.Visible = true;
     if (this.isValidForm())
        {
            Post oPost = new Post();
            oPost.UserID = Convert.ToInt32(Session["UserID"]);
            oPost.PostID = iPostID;       

            oPost.PostDescription = (txtDescription.Text); // Here txtDescription is TextBox Value's! Here only get content From Editor......

              if (!oPost.IsExisDescription())
            {
                if (oPost.SaveDescription())
                {
                    divMsg.InnerHtml = "Save Successfully";
                    divMsg.Attributes.Add("class", "success");
                    if (iPostID == 0)
                        this.ClearFields();
                }
                else

                    divMsg.InnerHtml = "Saved Failed";
            }
            else
            {
                divMsg.InnerHtml = "You have already Send Same Post!";

                divMsg.Attributes.Add("class", "info");
            }
        }
    }

Query:

public bool SaveDescription() {

        SQLDAL oDAL = new SQLDAL();
        oDAL.AddParamToSQLCmd(oDAL.SQLCommand, "@UserID", SqlDbType.Int, 0, ParameterDirection.Input,iUserId );
        oDAL.AddParamToSQLCmd(oDAL.SQLCommand, "@PostDescription", SqlDbType.NVarChar, 500, ParameterDirection.Input, sPostDescription);
        oDAL.AddParamToSQLCmd(oDAL.SQLCommand, "@PostID", SqlDbType.Int, 0, ParameterDirection.Input, iPostID);
        if (PostID == 0)
            sQuery = "INSERT INTO Posts (PostDescription, CreatedBY, CreatedDate, ModifiedBY, ModifiedDate) VALUES"
                + "(@PostDescription, @UserID, GETDATE(), @UserID, GETDATE())";
        else
            sQuery = " UPDATE Posts SET PostDescription=@PostDescription,ModifiedBY=@UserID,ModifiedDate=GetDate() WHERE PostID=" + iPostID;

        oDAL.SetCommandType(oDAL.SQLCommand, CommandType.Text, sQuery);
        bool bFlag = Convert.ToBoolean(oDAL.ExecuteNonQueryCmd(oDAL.SQLCommand));
        oDAL = null;
        return bFlag;
    }

Help Me..

Regds A.Riyajudeen