Unable to change DataRow value

I want to change a Datarow value. I want to change DT2[0].ItemArray[3] I tried this code, but it didn't work.

private void Func(DataRow[] DtRowTemp)
{
    DataRow[] DT2 ;
    DT2 = DtRowTemp; // It work and DTRowTemp value has set to DT2

    // above code don't work
    DT开发者_如何转开发2[0].ItemArray[3] = 3;   // Last Value Was 2 and I want to change this value to 3
}

With the ItemArray Property you get or set the ENTIRE array, not a single value.

Use this to set the fourth item:

 DT2[0][3] = 3;