how to submit changes in sql smo in C#?

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C#

SQL

Hi,
How to submit changes in sql smo using C#?
I obtain the dataset in this way:

dataSet= db.ExecuteWithResults("Select " + tableName + ".* from " + tableName);
dataGridData.DataSource = dataSet.Tables[0];

Is there any way to submit changes in data grid to the table?

thx.