ADO.NET :: Data Adapter Update Method With Command Builder

Code:

SqlDataAdapter da = new SqlDataAdapter("select * from " + txtTableName.Text, DataStoreGeneral.GetConnectionString());
DataTable dt_app = new DataTable();
da.MissingSchemaAction = MissingSchemaAction.AddWithKey;
da.FillSchema(dt_app, SchemaType.Source);
da.Fill(dt_app);
SqlCommandBuilder build = new SqlCommandBuilder(da);
da.InsertCommand= build.GetUpdateCommand();
da.Update(ds.Tables[1].GetChanges(DataRowState.Added));

Problem: In my scenerio i had dataset with a table (in code->ds.Tables[1]) in rowstate added. I wanted update on database with this table so i changed insert command of adapter to update command of command builder, but no update got performed. When debugged in sql profiler i found that update command generated by builder is checking all columns in where clause and with parameter value of data table instead of from database column value.

exec sp_executesql N'UPDATE [ShopResources] SET [GROUP_RESOURCE_ID] = @p1, [SEQ_NO] = @p2, [SUB_RESOURCE_ID] = @p3, [EFFICIENCY_FACTOR] = @p4, [RUN_COST_PER_HR] = @p5, [RUN_COST_PER_UNIT] = @p6, [BUR_PER_HR_SETUP] = @p7, [BUR_PER_HR_RUN] = @p8, [BUR_PERCENT_SETUP]
= @p9, [BUR_PERCENT_RUN] = @p10, [BUR_PER_OPERATION] = @p11 WHERE (([GROUP_RESOURCE_ID] = @p12) AND ([SEQ_NO] = @p13) AND ([SUB_RESOURCE_ID] = @p14) AND ((@p15 = 1 AND [EFFICIENCY_FACTOR] IS NULL) OR ([EFFICIENCY_FACTOR] = @p16)) AND ([RUN_COST_PER_HR] = @p17)

AND ([RUN_COST_PER_UNIT] = @p18) AND ([BUR_PER_HR_SETUP] = @p19)

The problem I identified is parameter values inside where clause are from data table which is obvious that update condition will not be met. Is there some way to restrict where clause to primary key only in Command Builder?Or why is command builder taking where clause parameter values from datatable instead of command (query)?