Passing Args from one Form to another Form in dynamics AX

Args in dynamics AX is one can easy way to pass arguments from one Form to another Form.

Here, how to pass Arguments from Form to Form. 

So when I select one record in grid Form A, that record will be passed to Form B

Form B will filter the record and will show.

Step 1: Make one TestTable which has three fields named (ID, name).
Step 2: Make FormA with datasource as TestTable and drag the datasource fields into the design Grid.
Step 3: Drag one button and override the click method and write the following code.

void clicked()
{
Args args;
FormRun formRun;
;
super();
args = new args(formstr(FormB)); // sending record to FormB using Args
args.record(TestTable);
formrun = classfactory.formrunclass(args);
formrun.init();
formrun.run();
formrun.wait();
formrun.detach();

}

step 4: Make FormB with datasource as same table for which you take for Form A i.e., TestTable

step 5: write the following code in to the init method of FormB.

public void init()
{
TestTable  testTable;
super();
testTable = element.args().record();
SampleTable_ds.query().dataSourceTable(Tablenum(TestTable)).addRange(fieldNum(testTable,RecId)).
value(SysQuery::value(testTable.Recid));
}

It will filter the records in Form B