QtableWidget: How to find value in specific column

问题

I need to check wether a specific value is in a specific column using qtablewidget. In my case I need to check the first column wether an ID is allready existing, if yes I need the number of the containing row to update this row otherwise I like to add the row. Is there any solution provided by QT to check the column or shou

回答1:

I assume that you are looking for your value in first column (that why second argument in item(int,int) is 0) and table name is myQTableWidget

int rows = myQTableWidget->rowCount();
bool found = false;
for(int i = 0; i < rows; ++i)
{
    if(myQTableWidget->item(i, 0)->text() == "Something")
    {
        //we have found our value so we can update 'i' row
        found = true;
        break;
    }
}
if(!found)
{
    //we didn't find our value, so we can insert row
}

来源：https://stackoverflow.com/questions/12392395/qtablewidget-how-to-find-value-in-specific-column