DataAdapter: Update unable to find TableMapping['Table'] or DataTable 'Table'

Question

This code snippet is throwing an error:

Update unable to find TableMapping[\'Table\'] or DataTable \'Table\'.) on adapter.Update(ds); line

Answer 1

I agree with jgauffin and I will only explain it with more text.

First, I must explain how TableMapping works. If we don't specify TableMappings with SqlDataAdapter (SqlDataAdapter that will fill our DataSet) then by default the first table will be named "Table", the second will be named "Table1", the third will be named "Table2" etc.

So, when we want to name DataTable in DataSet, we use it like this:

System.Data.DataSet myDataSet = new System.Data.DataSet();

using (System.Data.SqlClient.SqlDataAdapter dbAdapter = new System.Data.SqlClient.SqlDataAdapter(dbCommand))
{
    dbAdapter.TableMappings.Add("Table", "Cars");
    dbAdapter.TableMappings.Add("Table1", "Trucks");
        //...

    dbAdapter.Fill(myDataSet);
}

And only then we can modify it like this:

myDataSet.Tables["Cars"].Rows[0]["Brand"] = "Toyota";
myDataSet.Tables["Trucks"].Rows[0]["Brand"] = "MAN";